Method for finely grinding main shaft necks of crankshaft

A main journal and crankshaft technology, applied in the field of crankshaft processing, can solve problems such as difficulty in improving machining accuracy, affecting grinding quality, cracks or breakage, etc., and achieve the effect of improving coaxiality, easy operation, and eliminating influence
CN102152180AInactive Publication Date: 2011-08-17青岛淄柴博洋柴油机股份有限公司
4 Cites 8 Cited by

Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
青岛淄柴博洋柴油机股份有限公司
Publication Date
2011-08-17
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a method for finely grinding main shaft necks of a crankshaft. The method comprises the following specific steps: putting the main shaft necks of the crankshaft on central frames of a grinding machine; connecting a main shaft box of the grinding machine with one end of a universal coupling, and connecting the other end of the universal coupling with one end of the crankshaft, wherein the free end of the crankshaft is not in contact with the top of a tail stock of the machine tool; aligning the axis of the crankshaft, and taking the axis of the crankshaft as the reference; and firstly grinding all the main shaft neck positions supported by all the central frames, and then grinding the other main shaft necks. By using the processing method, the influence of the accuracy error of the machine tool on the grinding quality can be effectively eliminated, the operation is simple and convenient, the reliability is high, and the coaxiality value of the crankshaft can be improved by one accuracy level as compared with the tolerance designed in a drawing.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a crankshaft processing method, in particular to a method for finely grinding the crankshaft main journal. Background technique

[0002] The concentricity tolerance of the crankshaft is an important index to measure the quality of the crankshaft, and its value will directly affect the performance of the diesel engine. If the concentricity is poor, the crankshaft will generate additional bending stress during operation, which will aggravate the wear of the journal, and the alternating stress of tension and compression will be generated at the transition fillet. When the allowable stress of the material is exceeded, it will cause The crankshaft produces cracks or breaks, and the coaxiality value of the crankshaft is finally formed when the main journal is finely ground. When the main journal is ground by the traditional processing method, the precision error of the machine tool itself will affect the grinding quality, making the ...

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