Hydroforming machine and a method of hydroforming

Inactive Publication Date: 2006-08-24
TOYOTA JIDOSHA KK
View PDF6 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0014] According to one aspect of the invention there is provided a hydroforming machine molding a board shape blank having; a lower die having an opening on the upper surface and a fluid tank filled with fluid, an upper die being able to hold a periphery part between the lower die and the upper die, a movable object being movable in a direction into or out for the fluid tank, and a fluid pressure controller controlling the fluid pressure in the fluid tank according to the position of the movable object. In order to the invention, it is possible to prevent generating wrinkle effectively when a board-like blank formed in complicated shape. The thinner the blank the lager an effect of preventing wrinkle becomes.
[0015] According to other aspect of the invention there is provided claim 2 is the hydroforming machine recited in claim 1, wherein said fluid pressure controller comprises, a passage connecting the fluid tank and an outside of the lower die, a valve arranged at a halfway of the passage, a fluid pressure detection means which detects pressure of fluid in the fluid tank; and a movable object position detection means which detects a position of the movable object. In order to the invention, the pressure of the water, filled in the fluid tank, can be adjusted with simple composition without using actuators, such as hydraulic cylinder, etc. Maintenance becomes easy and the manufacture cost of hydroforming machine can b

Problems solved by technology

It is not possible to control the pressure of the fluid independently without changing the position of the punch 104.
Therefore,

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

Examples

Experimental program
Comparison scheme
Effect test

Example

[0026] Below, a hydroforming machine 1 which is an embodiment of the hydroforming machine of this invention is explained using FIG. 1. In addition, a hydroforming machine 1 of this embodiment is equipment which forming thin boards 11 to an exhaust manifold of a car as a product. This invention is widely applicable to what forms thin board in complicated shape. It is not limited to the use of a hydroforming machine 1.

[0027] A hydroforming machine 1 mainly comprises die 2, a holder 3, a punch 4, a pressure controller 5, and a control device 6, etc.

[0028] A thin board 11 in this embodiment is a blank of SUS, whose thickness is 0.4 mm. The kind of the material blank is not limited. Various metal materials, such as titanium, copper, and aluminum, can be used for. Moreover, the thickness of a blank is not limited. Hydroforming machine 1 of the embodiment has larger effect of the prevention of generating wrinkle as compared with conventional hydroforming machine.

[0029] The die 2 is an exam

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
Pressureaaaaaaaaaa
Login to view more

Abstract

A hydroforming machine characterized by a die 2 having an opening on the upper surface and a fluid tank 2a filled with fluid, a holder 3 being able to hold a periphery part between the die 2 and itself, a punch 4 being movable in a direction into or out for the fluid tank 2a, and a pressure controller 5 controlling the fluid pressure in the fluid tank 2a according to the position of the punch 4.

Description

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

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
Owner TOYOTA JIDOSHA KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap