Connecting rod machining technique

A processing technology and connecting rod technology, applied in the field of mechanical parts processing, can solve the problems of complex connecting rod processing technology, low processing efficiency, weak connecting rod bearing capacity, etc., and achieve reasonable arrangements, improve productivity, and improve connecting rod bearing capacity. Effect

Inactive Publication Date: 2014-01-08
QINGDAO CONNECTINROD MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high-efficiency connecting rod processing technology for the existing disadvantages of complicated processing technology, low processing efficiency and weak connecting rod bearing capacity

Method used

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  • Connecting rod machining technique
  • Connecting rod machining technique

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] see figure 1 and figure 2 , a connecting rod machining process, including a rough machining stage, a semi-finishing machining stage and a finishing machining stage,

[0019] (1) Rough machining stage: Forging blanks with smooth surface, no bruises, scratches and cracks. The blanks are 20Cr steel with a hardness HRC value of 20°. The blanks include big end, shaft and small end , the big end and the small end are both round cake shapes, the center distance between the big end and the small end of the connecting rod is 100mm, the radius of the big end is 26mm, and the radius of the small end is 16.5mm. The surface of the forged piece is plated For copper treatment, use a surface grinder to rough grind the surface of the workpiece. Taking the two ends of the connecting rod as the plane reference, use a CNC drilling machine to drill large and small holes on the big end and small end of the connecting rod to obtain a rough machined workpiece ;

[0020] (2) Semi-finishing ...

Embodiment 2

[0023] see figure 1 and figure 2 , a connecting rod machining process, including a rough machining stage, a semi-finishing machining stage and a finishing machining stage,

[0024] (1) Rough machining stage: Forging blanks with smooth surface, no bruises, scratches and cracks. The blanks are made of 20Cr steel with a hardness HRC value of 23°. The blanks include big end, shaft and small end , the big end and the small end are both round cake shapes, the center distance between the big end and the small end of the connecting rod is 100mm, the radius of the big end is 26mm, and the radius of the small end is 16.5mm. The surface of the forged piece is plated For copper treatment, use a surface grinder to rough grind the surface of the workpiece. Taking the two ends of the connecting rod as the plane reference, use a CNC drilling machine to drill large and small holes on the big end and small end of the connecting rod to obtain a rough machined workpiece ;

[0025] (2) Semi-fi...

Embodiment 3

[0028] see figure 1 and figure 2 , a connecting rod machining process, including a rough machining stage, a semi-finishing machining stage and a finishing machining stage,

[0029] (1) Rough machining stage: forging blanks with smooth surface, no bruises, scratches and cracks. The blanks are 20Cr steel with a hardness HRC value of 25°. The blanks include big end, shaft and small end , the big end and the small end are both round cake shapes, the center distance between the big end and the small end of the connecting rod is 100mm, the radius of the big end is 26mm, and the radius of the small end is 16.5mm. The surface of the forged piece is plated For copper treatment, use a surface grinder to rough grind the surface of the workpiece. Taking the two ends of the connecting rod as the plane reference, use a CNC drilling machine to drill large and small holes on the big end and small end of the connecting rod to obtain a rough machined workpiece ;

[0030] (2) Semi-finishing ...

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Abstract

The invention relates to the technical field of mechanical part machining and in particular discloses a connecting rod machining technique. The connecting rod machining technique mainly comprises a rough machining stage, a semi-fine machining stage and a fine machining stage. The coarse machining stage is that a blank part is forged, the large end and the small end of the blank part are both in cake shapes, and the surface of the blank part is roughly ground. The semi-fine machining stage is that a boring cutter is utilized to turn a large end hole and a small end hole of a connecting rod, an oil groove is formed, an external angle of the oil groove is chamfered, and an internal angle of the oil groove is chamfered. The fine machining stage is that the surface of the blank part is finely ground, and the large end hole and the small end hole of the connecting rod are honed. The connecting rod machining technique has the advantage being reasonable in arrangement of all technologic stages, greatly simplifying technologic machining steps, improving connecting rod production rate, well reducing the weight of the connecting rod, enhancing the strength of the connecting rod and effectively improving the bearing capacity of the connecting rod.

Description

technical field [0001] The invention relates to the technical field of mechanical parts processing, in particular to a processing technology of a connecting rod. Background technique [0002] At present, connecting rod processing is a typical part processing in the mechanical manufacturing process. The connecting rod is composed of the connecting rod cover and the rod body, and the connecting rod cover and the rod body are combined by screws. The big end is usually connected with the crankshaft, and the small end is connected with the piston through the piston pin, and the gas pressure acting on the piston It is transmitted to the crankshaft, so that the reciprocating motion of the piston becomes the rotational motion of the crankshaft. When the connecting rod is working, the size and direction of the gas pressure that drives the piston to reciprocate changes periodically. At the same time, the pressure of the gas produces a large compressive stress and longitudinal bending...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/14
CPCB23P15/14B23P2700/04F16C7/02
Inventor 黄荣谭哲宝
Owner QINGDAO CONNECTINROD MACHINERY
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