Several-time drawing formation device for deep-cylinder-shaped piece

A technology for multiple deep-drawing and deep cylindrical parts, which is applied in the direction of forming tools, metal processing equipment, manufacturing tools, etc., can solve the problems of bottom cracking, high scrap rate of formed parts, and inability to realize parts forming, etc., to prevent bottom Effects of cracking, increased frictional resistance, and enhanced flow tendency

Inactive Publication Date: 2013-05-08
XI AN JIAOTONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, because many plates are constrained by the formability and technology itself, deep cylindrical parts with a larger height-to-diameter ratio (generally, the height-to-diameter ratio is greater than 3), and complex parts with higher forming limits cannot be realized when only relying...

Method used

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  • Several-time drawing formation device for deep-cylinder-shaped piece
  • Several-time drawing formation device for deep-cylinder-shaped piece
  • Several-time drawing formation device for deep-cylinder-shaped piece

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Embodiment Construction

[0018] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0019] refer to figure 1 , a device for multiple deep-drawing of deep cylindrical parts, including an upper mold base 1 and a lower mold base 10, the upper mold base 1 and the lower mold base 10 are connected to the guide column 3 through a ball guide bush 2, and the upper mold base 1 Install and fix the punch positioning part 4 with screws. There are 4 countersunk holes at the upper end of the punch positioning part 4. There are 4 evenly distributed deep holes at the lower end of the punch positioning part 4. Place 4 nitrogen cylinders in the deep holes. Fixed on the positioning part 4 of the punch by screws, the nitrogen cylinder is composed of a cylinder body 5 and a piston rod 6, replacing the traditional blank holder device, the piston rod 6 and the blank holder 7 are interference fit, and the rubber block 8 and the blank holder 7 Bonded together with an adhesi...

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Abstract

Disclosed is a several-time drawing formation device for a deep-cylinder-shaped piece. The several-time drawing formation device for the deep-cylinder-shaped piece comprises an upper die base and a lower die base. The upper die base and the lower die base are connected with guide pillars through ball bearing guide bushings, a protrusion locating piece is fixedly installed on the upper die base, nitrogen cylinders are arranged on the lower end of the protrusion locating piece, piston rods of the nitrogen cylinders and blank holders tightly press blank materials through a groove at the lower end of a rubber block, a protrusion main body is installed on the protrusion locating piece and is composed of a protrusion die, a polyurethane elastomer, a locating ring, a pressing plate and a protrusion die connecting piece, a cone-shaped concave mould is fixed on the lower die base, and an ejector rod ejects out a workpiece after several-time drawing are finished. Due to the fact that a nitrogen cylinder flange pressing device and the polyurethane elastomer are both used on the several-time drawing formation device for the deep-cylinder-shaped piece, efficiency and quality of drawing formation can be ensured.

Description

technical field [0001] The invention belongs to the technical field of material forming, and in particular relates to a multi-drawing forming device for deep cylindrical parts. Background technique [0002] Deep cylindrical products are widely used in all walks of life, military fields such as missile casings, torpedo casings, aircraft auxiliary fuel tanks, etc.; civilian fields such as automobile airbags, high-end water cups, etc.; chemical fertilizer tanks, gas storage tanks, high-pressure containers, etc. in the chemical industry. In the sheet metal forming process, the deep drawing process has become the main method for forming cylindrical parts due to its high efficiency and good quality. However, because many plates are constrained by the formability and technology itself, deep cylindrical parts with a larger height-to-diameter ratio (generally, the height-to-diameter ratio is greater than 3), and complex parts with higher forming limits cannot be realized when only re...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D22/20
Inventor 张琦蔡进曹苗赵升吨崖华清周志江
Owner XI AN JIAOTONG UNIV
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