Forming and machining method of large-scale aviation bomb shell body

A processing method and shell technology, which is applied in the field of forming and processing large-scale aerial bomb shells, can solve the problems of low manufacturing cost, high material utilization rate, and long cutting and processing cycle, and achieve low manufacturing cost, high material utilization rate, and cutting The effect of shortening the processing cycle

Active Publication Date: 2021-01-05
湖北三江航天江北机械工程有限公司
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of this processing method are: the material utilization rate is low, only 30-40%, and the cutting cycle is long, usually about half a month, resulting in high manufacturing costs
The existing forming and processing technology of large-scale aircraft shells is difficult to meet the new requirements of high processing efficiency, short processing cycle, high material utilization rate and low manufacturing cost

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Forming and machining method of large-scale aviation bomb shell body
  • Forming and machining method of large-scale aviation bomb shell body
  • Forming and machining method of large-scale aviation bomb shell body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] For a certain type of 35CrMnSiA ultra-high-strength steel large-scale aerial bomb shell, its external diameter d1 is 400mm, shell length L0 is 1500mm, and wall thickness t1 is 16mm. The forming and processing methods of the large-scale aerial bomb shell are as follows:

[0057] 1) Spinning blank processing of aerial bomb shell

[0058] Roughly process the round tube into the spinning blank of the bomb shell, the wall thickness of the spinning blank of the bomb shell is 32mm, t3≥0.5t2, t2 is the maximum thickness of the head of the bomb shell product 60mm, and ensure that t3≥L5+ 4mm, L5 is the maximum thickness of the tail end face of the shell product of the aerial bomb 26mm;

[0059] Among them, the round pipe adopts hot-rolled seamless steel pipe, and the inner diameter d6 of the spinning blank of the aerial bomb shell is 2mm smaller than the inner diameter d7 of the inner surface after hot spinning and processing the inner surface of the spinning blank head of the ae...

Embodiment 2

[0075] For a certain type of 35CrMnSiA ultra-high-strength steel large-scale aerial bomb shell, its external diameter d1 is 500mm, shell length L0 is 2000mm, and wall thickness t1 is 20mm. The forming and processing methods of the large-scale aerial bomb shell are as follows:

[0076] 1) Spinning blank processing of aerial bomb shell

[0077] Roughly process the round tube into the spinning blank of the bomb shell, the wall thickness of the spinning blank of the bomb shell is t3 is 42mm, t3≥0.5t2, t2 is the maximum thickness of the head of the bomb shell product 80mm, and ensure that t3≥L5+ 5mm, L5 is the maximum thickness of the tail end face of the shell product of the aerial bomb 35mm;

[0078] Among them, the round pipe adopts hot-rolled seamless steel pipe, and the inner diameter d6 of the spinning blank of the aerial bomb shell is 3mm smaller than the inner diameter d7 of the inner surface after hot spinning and processing the inner surface of the spinning blank head of ...

Embodiment 3

[0094] For a certain type of 35CrMnSiA ultra-high-strength steel large-scale aerial bomb shell, its external diameter d1 is 600mm, shell length L0 is 2000mm, and wall thickness t1 is 24mm. The forming and processing methods of the large-scale aerial bomb shell are as follows:

[0095] 1) Spinning blank processing of aerial bomb shell

[0096] Roughly process the round tube into the spinning blank of the bomb shell, the wall thickness of the spinning blank of the bomb shell is 50mm, t3≥0.5t2, t2 is the maximum thickness of the head of the bomb shell product 90mm, and ensure that t3≥L5+ 6mm, L5 is the maximum thickness 42mm of the end face of the tail end of the shell product of the aerial bomb;

[0097] Among them, the round pipe adopts hot-rolled seamless steel pipe, and the inner diameter d6 of the spinning blank of the aerial bomb shell is 4mm smaller than the inner diameter d7 of the inner surface after hot spinning and processing the inner surface of the spinning blank hea...

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

PUM

PropertyMeasurementUnit
Lengthaaaaaaaaaa
Wall thicknessaaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a forming and machining method of a large-scale aviation bomb shell body. The aviation bomb shell body comprises an aviation bomb shell body head part, a straight cylinder section and an aviation bomb shell body tail part, and the forming and machining method of the large-scale aviation bomb shell body comprises the following steps of machining of a spinning blank of the aviation bomb shell body, hot spinning forming of the aviation bomb shell body head part, machining of the inner molded surface of the aviation bomb shell body head part and an inner hole of the straight cylinder section, forward power spinning forming of shape of the straight cylinder section of the aviation bomb shell body, hot spinning forming of the aviation bomb shell body tail part and machining of shape and the tail inner molded surface of the aviation bomb shell body. According to the forming and machining method of the large-scale aviation bomb shell body, the material utilization rateis high and reaches 60%-70%, the cutting machining period is shortened by two thirds and can be generally completed within five days, and the manufacturing cost is reduced by 30%-50%.

Description

technical field [0001] The invention relates to the technical field of processing large-scale aerial bomb shells, in particular to a method for forming and processing large-scale aerial bomb shells. Background technique [0002] With the rapid development of modern defense technology, large bombers and fighters are widely used in defense equipment, and corresponding large precision guided missiles are also widely used. [0003] Traditional small aerial bombs have a diameter of about 200mm and a length of about 500mm. Generally, the bar is heated and extruded into a billet for cutting. The diameter of modern large-scale aerial bombs is generally greater than 400mm and the length is greater than 1500mm. It is difficult to realize the traditional hot extrusion forming billet due to the insufficient capacity of hot extrusion equipment and the difficulty in ensuring the internal quality of hot extrusion forming. [0004] For the forming and processing of the existing large-scale...

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

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B23P15/22
CPCB23P15/22
Inventor韩庆波唐旭亮马旷张奕吴钦
Owner湖北三江航天江北机械工程有限公司