Forming Method of Large Diameter Flange Cylinder
A large-diameter, flanged technology is applied in the field of forming large-diameter flanged cylinders, which can solve the problems of wasting time, increasing costs, and easy deformation of flanges, and achieves the effect of simple process, cost saving and process time reduction.
Inactive Publication Date: 2018-03-02
NANCHANG INST OF TECH
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Problems solved by technology
However, in this way, after the inner hole is formed, 1) the flange is easily deformed, and additional processes are required to reshape the flange; 2) when the inner hole is formed, a larger arc will be generated at the joint between the flange and the inner hole , it is usually necessary to increase the thickness of the flange and reduce the size of the inner hole to improve this defect
This wastes time and increases costs
Method used
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[0026] The forming method of the large-diameter flange cylinder of the present invention will be described in detail below in conjunction with the accompanying drawings. Those skilled in the art should understand that the embodiments described below are only illustrative illustrations of the present invention, and are not intended to limit it in any way.
[0027] figure 1 The large-diameter flange cylinder of the present invention is shown. As shown in the figure, the large-diameter flange cylinder includes a cylinder body with a bottom and a flange, wherein the flange is located at the opening of the cylinder body. Large diameter flanged cylinders as described herein generally refer to cylinders with a flange diameter to cylinder body diameter ratio greater than 1.5:1. Since the diameter of the flange is much larger than the diameter of the cylinder block, the flange is difficult to form. In the prior art, the common forming method is to form the flange by forward extrusion...
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Abstract
The invention discloses a forming method for a large-diameter flange air cylinder. The forming method includes the steps that firstly, after a bar is heated, the bar is formed into a first blank with a first bottom through a first process die, and the first bottom is perpendicularly upward to form a first protruding part; secondly, the first blank is extruded into a second blank through a second process die, wherein the second blank comprises a second bottom, the second bottom is perpendicularly and upwards extends to form a second protruding part consistent with the first protruding part, and the second protruding part extends outwards to form a conical protruding part; thirdly, the conical protruding part of the second blank is extruded to be perpendicular to the second protruding part through a third process die, the a pre-formed flange is obtained, the radial size of the pre-formed flange is reduced, other shapes are not changed, and a third blank is obtained; and fourthly, the thickness of a pre-formed flange of the third blank is reduced through a fourth process die, meanwhile, the diameter is increased, other shapes are not changed, and the needed large-diameter flange air cylinder is obtained. According to the forming method for the large-diameter flange air cylinder, the technology is simple, and cost is saved.
Description
technical field [0001] The invention relates to a forming method of a large-diameter flange cylinder. Background technique [0002] In the forming process of the large-diameter flange cylinder, due to the large diameter of the flange, it is difficult to form. At present, the common solution is to form the flange first, and then form the inner hole. However, in this way, after the inner hole is formed, 1) the flange is easily deformed, and additional processes are required to reshape the flange; 2) when the inner hole is formed, a larger arc will be generated at the joint between the flange and the inner hole , It is usually necessary to increase the thickness of the flange and reduce the size of the inner hole to improve this defect. This wastes time and increases costs. [0003] Aiming at the above deficiencies, the present invention provides a method for forming a large-diameter flanged cylinder. Contents of the invention [0004] The object of the present invention ...
Claims
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IPC IPC(8): B21C23/20B21C25/02B21C23/32
CPCB21C23/20B21C23/32B21C25/02
Inventor 沈智
Owner NANCHANG INST OF TECH