Rework Tool for Crankshaft Thrust Disk Surface of Large Low Speed Diesel Engine
A diesel engine and thrust disc technology, which is applied to machine tools, manufacturing tools, and metal processing equipment suitable for grinding workpiece planes, can solve problems such as difficulty in achieving the flatness accuracy of the thrust disc surface, narrow operating space, etc., to ensure machining accuracy and Effect of rework quality and improvement of labor productivity
Active Publication Date: 2016-03-09
HUDONG HEAVY MACHINERY
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Problems solved by technology
[0007] Due to the very narrow operating space, the above four requirements cannot be met only by the worker's hand feeling, and it is difficult to achieve the flatness accuracy of the thrust disk surface required for repair work
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[0025] The structure and specific application of the repair tool for the crankshaft thrust disk surface of a large low-speed diesel engine according to the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention should not be limited by this.
[0026] The repair tool of the present invention is used to complete the repair work of high-precision crankshaft thrust disk surface in the narrow space of large-scale low-speed diesel engine, and it relies on machining instead of manual operation to ensure the repair quality of the plane. see figure 1 with figure 2 , the crankshaft 01 of the large low-speed diesel engine shown in the figure is erected on the bearing housing, and its axis is set along the direction from the free end to the thrust end of the diesel engine. The left side of the crankshaft 01 is the fuel side, and the right side is the exhaust side...
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A repair tool for a large low-speed diesel engine crankshaft thrust disc surface comprises a bearing cover type base, a door type support, a guide rail, two adjusting plates and a pneumatic polisher. The bearing cover type base is fixed on a bearing block. The door type support is mounted on the plane at the top of the bearing cover type base in a position adjustable manner. Vertical adjusting bolts for adjusting the perpendicularity of the door type support is mounted at the bottom of the standing columns of the door type support. A screw is disposed in the guide rail. The guide rail is fixed on the upper crossbeam of the door type support through a small semi-circular pressing plate. The two adjusting plates are respectively fixed on the thrust surfaces of the two standing columns of the door type support. A horizontal adjusting bolt is mounted on the lower portion of each adjusting plate and screwed on the thrust surface of the bearing cover type base so as to adjusting the horizontal positions of the door type support. The pneumatic polisher is connected to the screw and can move up and down along the guide rail. The repair tool is convenient to operate in a narrow operation space and high in machining precision, polishing and repairing of the crankshaft thrust disc surface can be completed in a short time, and repairing quality is increased while labor productivity is increased greatly.
Description
technical field [0001] The invention relates to equipment for repairing diesel engines, in particular to a tool for repairing thrust disk surfaces of crankshafts of large low-speed diesel engines, and belongs to the technical field of diesel engine manufacturing. Background technique [0002] When a marine large low-speed diesel engine is repairing the crankshaft thrust disk, workers generally enter the narrow operating space in the main engine with a hand-held throwing machine to manually repair the crankshaft thrust disk. The rework work places very high demands on the precision of the grinding. After the thrust disk is repaired, the following requirements need to be met: [0003] ① The circular runout of the crankshaft thrust disk for one rotation is less than 0.03mm; [0004] ② The roughness of the repaired surface is required to be less than Ra0.8; [0005] ③ The thickness of the crankshaft thrust plate must be consistent from top to bottom to ensure that the total g...
Claims
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IPC IPC(8): B24B19/00
CPCB24B7/16
Inventor 徐一久朱跃斌石丽明
Owner HUDONG HEAVY MACHINERY