Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for producing a helical cast pattern

A spiral and mold-casting technology, which is applied in the direction of casting and molding equipment, can solve problems such as inhomogeneity, casting defect material characteristics, uneconomical assembly process, etc.

Active Publication Date: 2020-12-01
FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such joints of partial model bodies are fundamentally problematic because they can lead to casting defects or inhomogeneities in the material properties during the casting process
Depending on the number of partial model bodies to be combined and the number of parts to be produced each year, this assembly process can become uneconomical

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
  • Method for producing a helical cast pattern
  • Method for producing a helical cast pattern
  • Method for producing a helical cast pattern

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0055] Figure 1a A helical casting mold 1 is shown, which is formed from a hollow cylinder with an inner cavity 3 , wherein a helical recess 16 is formed in the cylinder wall / model body wall 4 . The part of the cylinder wall 4 which remains between the individual channels of the helically encircling recess 16 forms a helix which can be cast as a casting mold from a metal casting in the lost foam casting method. The metal coil body or the helical spring or disk spring can thus be produced in a subsequent casting process.

[0056] exist Figure 1a The lower right of the shows the section of the cable that forms the helix. The cross-section shown is square: the dimension of the cross-section in the direction of the longitudinal axis 2 (axial) is shown in the direction of the vertical arrow 100 , the dimension of the cross-section is shown in the direction of the horizontal arrow 101 against the axis 2 radial dimensions.

[0057] The longitudinal axis of the casting mold 1 an...

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

No PUM Login to View More

Abstract

The invention relates to a method for producing a helical cast pattern (1), in which a pattern body (1') in the form of a strand, in particular of EPS, EPMA, copolymer or a wax, with a centric longitudinal axis (2), a centric cavity (3) extending in the direction of the longitudinal axis (2) and a pattern body wall (4) surrounding the cavity, on the one hand, and a processing tool (5, 5') for producing a recess (16), on the other hand, are arranged in such a way that the processing tool (5, 5') extends at least partially through the pattern body wall (4) in a radial direction with respect to the longitudinal axis (2) and that the processing tool (5, 5') and / or the pattern body (1') are driven in a rotating manner about the longitudinal axis (2) of the pattern body or an axis parallel thereto in relation to one another, wherein during or in alternation with the rotational movement (6) a relative movement (7) between the pattern body and the processing tool in a direction parallel to thelongitudinal axis (2) is produced continuously or at least from time to time. This succeeds in introducing a helical recess into the pattern body and producing a helical cast pattern with optimized use of space.

Description

technical field [0001] The invention relates to the field of mechanical engineering, more specifically to the field of casting technology and can be used particularly advantageously in methods using lost foam, for example in so-called lost foam casting or lost wax casting and in precision casting middle. If the helical body is to be produced by casting, casting using lost foam is particularly well suited for this. Background technique [0002] Lost forms can be produced in the form of dissolvable mold bodies, which are dissolved and volatilized, for example, by hot metal melts in metal casting or escape from the space occupied by the lost forms and are extruded by the metal melt. [0003] Depending on the complexity of the objects to be cast, the production of such model bodies, which are essentially predetermined in the form for the objects to be produced later by casting, can be cost-intensive. Especially in the production of springs or coils, additional requirements are...

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
Patent Type & Authority Applications(China)
IPC IPC(8): B22C7/02
CPCB22C7/02B22C7/023B29C59/02B29C59/08B29C59/16B29C2059/028
Inventor 弗朗兹-约瑟夫·沃斯特曼马提亚斯·布塞
Owner FRAUNHOFER GESELLSCHAFT ZUR FOERDERUNG DER ANGEWANDTEN FORSCHUNG EV