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Multifunctional positioning pin hole

A locating pin hole, multi-functional technology, applied in the direction of engine components, cylinders, cylinder heads, etc., can solve the problems of high cost and loss of effect of fine reaming, and reduce the number of machining times, reduce machining costs, and large free space. Effect

Pending Publication Date: 2021-06-15
GUANGXI YUCHAI MASCH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] like figure 1 The traditional design layout is 1- lubricating oil hole, the bottom of the cylinder block is processed together with the idler gear shaft oil hole for idler gear lubrication, and 2- the positioning pin hole is the processing reference of the cylinder block. Due to the processing and positioning of the cylinder block, the 2-positioning pin hole requires fine reaming and the cost is relatively high. After the cylinder block is processed, the hole will lose its function

Method used

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  • Multifunctional positioning pin hole
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  • Multifunctional positioning pin hole

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0019] Such as image 3 Shown, a kind of multi-function positioning pin hole is applied to the engine cylinder block 5, comprises the positioning pin hole section 23 and the lubricating oil hole section 21 in series, one end of the positioning pin hole section 23 runs through the surface of the cylinder body 5, and the other end faces the cylinder block Extending inside the body 5; the lubricating oil hole section 21 extends from the end surface of the positioning pin hole section 23 in the cylinder to the cylinder until it communicates with the lubricating oil passage 6 in the cylinder.

Embodiment approach

[0020] In a preferred embodiment, the outer end surface of the positioning pin hole section 23 is a bowl-shaped structure.

[0021] Another preferred embodiment further includes a bowl-shaped plug, which is connected with the bowl-shaped structure on the outer end surface of the positioning pin hole section 23 with an interference fit.

[0022] The present invention moves the positioning pin 2 of the traditional design to the center position of the lubricating oil passage 1, so that it is figure 2 The middle bowl-shaped plug hole 3 merges. Such as Figure 4 As shown, when machining the cylinder block, the processing of the positioning pin hole and the bowl-shaped plug hole is completed first, that is, the processing of the positioning pin hole section 23 and the lubricating oil hole section 21 is completed, and it is completed after the positioning pin hole section 23 is used to process the cylinder block. The lubricating oil hole section 21 is processed so that lubricating...

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PUM

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Abstract

The invention discloses a multifunctional positioning pin hole. The multifunctional positioning pin hole is applied to an engine cylinder block and comprises a positioning pin hole section and a lubricating oil hole section which are connected in series, one end of the positioning pin hole section penetrates through the surface of the cylinder block, and the other end of the positioning pin hole section extends into the cylinder block; and the lubricating oil hole section extends into the cylinder block again from the cylinder block inner end face of the positioning pin hole section until the lubricating oil hole section is communicated with a lubricating oil way in the cylinder block. According to the multifunctional positioning pin hole, a larger free space is provided for the arrangement of engine cylinder block or cylinder cover lubricating oil holes and machining positioning pin hole, so that the arrangement of a whole machine is simpler, and meanwhile, the machining times and the machining cost are reduced.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a multifunctional positioning pin hole. Background technique [0002] When machining many complex parts on the engine, it is necessary to design positioning pin holes at the corresponding positions, which are used to fix the parts as machining benchmarks. At the same time, the parts may need to be lubricated. Due to design layout problems, there are many oil holes and machined positioning pin holes. Arranging difficulties and other issues. For example: the engine cylinder block, the front end or the rear end, because the gear chamber is arranged on the side of the idler gear shaft and other lubricating oil holes, it is necessary to drill the oil hole from the bottom surface of the cylinder block to the position of the idler gear shaft, and the front and rear ends are exactly the positioning pin holes. Arrange the location, so that the two holes are prone to layout difficulties, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F1/18F02F1/20
CPCF02F1/18F02F1/20
Inventor 向本杰蒙小聪王鹏程覃文黎华文王志刚余晓强卢祥林兰棠洁罗威
Owner GUANGXI YUCHAI MASCH CO LTD