Three-dimensional scribing method for large diesel engine frame
A three-dimensional, diesel engine technology, applied to workshop equipment, manufacturing tools, etc., can solve problems such as difficulty in hoisting, loss of equipment, personnel or parts, and unstable center of gravity, so as to avoid safety and quality accidents, reduce production costs, and improve planning. Effect of Line Accuracy
Active Publication Date: 2016-08-31
HUDONG HEAVY MACHINERY
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Problems solved by technology
However, this method of scribing has two disadvantages: one is that the frame of the large marine diesel engine is very high, the space in the overall frame is relatively large, and the rigidity is poor. When it is moved to the machine tool for processing, the deformation will change, resulting in deviations in the processing dimensions, resulting in reduced processing accuracy, and even quality accidents
The second is that the horizontal placement of the rack not only brings great difficulties to hoisting, but also makes the center of gravity very unstable, which may cause safety accidents and lead to the loss of equipment, personnel or parts
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[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention cannot be limited by this.
[0031] A three-dimensional scribing method for a large diesel engine frame according to the present invention, the frame has an upper plane, a lower plane, and several pairs of guide plates distributed symmetrically along the longitudinal direction and a transverse partition connecting each pair of guide plates, each pair of guide plates There are positive guide plate surfaces parallel to each other and side guide plate surfaces perpendicular to the positive guide plate surface, which is characterized in that: the upright position of the frame is used as the only working position for marking the line, and the upper plane and the lower plane are drawn at one time. The longitudinal centerline and transverse centerline of the plane are used as the positioning reference lin...
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A three-dimensional marking method for a frame of a large diesel engine. The frame has an upper plane, a lower plane, and several pairs of guide plates distributed symmetrically along the longitudinal direction and a transverse partition connecting each pair of guide plates. The positive guide plate surface of the positive guide plate surface and the side guide plate surface perpendicular to the positive guide plate surface are characterized in that: the vertical center of the upper plane and the lower plane is drawn at one time with the upright position of the frame as the only marking work position line and the transverse centerline are used as the positioning reference line for processing to ensure the uniform machining allowance of the upper plane, the lower plane, the positive guide plate surface and the side guide plate surface. The invention not only ensures the minimum deformation of the frame, improves the marking accuracy, and achieves the effects of reducing production costs and avoiding safety and quality accidents, but also has the advantages of scientific method and easy operation, and is suitable for any frame and frame parts. Scribe operation.
Description
technical field [0001] The invention relates to a manufacturing process of large diesel engine components, in particular to a three-dimensional marking method for a large diesel engine frame, and belongs to the technical field of diesel engine manufacturing. Background technique [0002] The frame is the main fixed part of a large marine diesel engine, which connects the cylinder block and the machine base up and down respectively, and contains main moving parts such as crosshead pins, sliders, piston rods, and connecting rods. see figure 1 , figure 2 , image 3 and Figure 4 , the rack 1 shown in the figure has an upper plane U and a lower plane D, and the rack 1 is arranged longitudinally (X-X direction) with a series of transverse partitions G parallel to each other and perpendicular to the longitudinal centerline X-X, which are respectively the first transverse partitions G1, the second diaphragm G2...the end diaphragm Gn (see figure 2 ). A pair of guide plates T...
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IPC IPC(8): B25H7/04
Inventor 龚丹叶华王思达费士锋
Owner HUDONG HEAVY MACHINERY