Manufacturing device and process of one-stroke drawn high square box-shaped pieces for titanium alloy sheets

A technology for single-stroke, box-shaped parts, applied in the direction of manufacturing tools, metal processing equipment, applications, etc., to achieve the effects of reducing tensile force, eliminating blank holders, and reducing stress-strain values ​​of dangerous sections

Active Publication Date: 2020-02-25
ZHEJIANG SHENJI TITANIUM IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the limitations of the existing mold and process that require two or more deep-drawings, one trimming, and the need for blank holders during the stretching process, the present invention proposes a single-stroke deep-drawing high square box-shaped piece for titanium alloy plates. The manufacturing device and process can be completed in one step in various types of biconical dies with one step

Method used

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  • Manufacturing device and process of one-stroke drawn high square box-shaped pieces for titanium alloy sheets
  • Manufacturing device and process of one-stroke drawn high square box-shaped pieces for titanium alloy sheets
  • Manufacturing device and process of one-stroke drawn high square box-shaped pieces for titanium alloy sheets

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Embodiment Construction

[0020] In this embodiment, TA1 industrial pure titanium plate is used to draw into a square box-shaped part: the side length is 45mm, the height is 50mm, and it is cut into a round blank by ordinary punching machine. Select a hydraulic press with a nominal force of 50MN and a hydraulic press with a slider speed of 50mm / s. The friction coefficient of material contact boundary and mold adopts μ=0.15. According to the recommendation of the current die design manual, the total drawing coefficient m=0.52 and the relative thickness of the blank (s / D)×100=1.36.

[0021] Such as figure 1 As shown, the tapered die 3 of this embodiment includes a two-stage structure of an upper part and a lower part, wherein: the upper part includes: a first taper 30, a second taper 32 intersecting with it, and a A smooth transition section 31 with a sufficiently large radius between the second taper and the second taper, and the lower part is a rectangular hollow column structure 33 .

[0022] In t...

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Abstract

The invention discloses a manufacturing device and process of one-stroke drawn high square box-shaped pieces for titanium alloy sheets. Through a conical female die of a two-section structure, manufacturing is completed in various types of biconical female dies through one process step; the one-stroke drawn high square box-shaped pieces can be formed by circular blanks in the biconical female diesthrough square male dies under the condition of blank pressing without blank holders, the upper parts of the female dies are biconical, and the lower parts of the female dies are square; and at the moment, the intersecting lines of the conical surfaces and straight wall planes of the square parts form hyperbolically-drawn edges.

Description

technical field [0001] The invention relates to a technology in the field of sheet metal forming, in particular to a manufacturing device and process for a single-stroke deep-drawing high square box-shaped piece for a titanium alloy sheet. Background technique [0002] Square parts are widely used in aerospace, automotive, instrumentation and other industrial sectors, and even in everyday commodities. The most promising process for obtaining square box-shaped parts is to use flat slabs in multi-pass deep-drawing in molds of corresponding shapes. The current process is to obtain a cylindrical semi-finished product in the first step of the mold, and then several processes to form a square box-shaped part. In the middle, there are also environmental pollution processes such as annealing and cleaning. The production cost is high and the efficiency is low. Contents of the invention [0003] Aiming at the limitations of the existing mold and process that require two or more d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/20B21D37/10B21D51/52
CPCB21D22/20B21D37/10B21D51/52
Inventor 陈修琳袁秦峰梁必成
Owner ZHEJIANG SHENJI TITANIUM IND
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