Method and Device for Producing Flangeless Drawn Parts
a technology of flangeless drawing and drawing parts, which is applied in the field of flangeless drawing parts production, can solve the problems of not allowing process-integrated calibration of drawn parts, requiring two cost-intensive steps, etc., and achieves the effects of improving dimensional accuracy, positive influence on cutting results, and cleaning cutting edges
Inactive Publication Date: 2014-02-20
THYSSENKRUPP STEEL EURO AG
View PDF2 Cites 4 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Benefits of technology
The invention relates to a method of cutting and shaping blank materials using a drawing press. The method involves trimming the blank in the supporting region and not in the rounded run-in portions or the drawing edge, which results in a clean trimmed edge. The blank does not harden immediately through trimming, allowing for a clean trimmed edge. The method is cost-effective as it requires a single step. In some cases, preformed blanks may produce excess material, which can be calibrated upon reaching the end position of the drawing punch. A replaceable insertion piece can also be used for parts affected by wear and tear, allowing for low-cost replacement.
Problems solved by technology
However, this requires two cost-intensive steps.
Moreover, said method does not allow process-integrated calibration of the drawn part.
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0027]Firstly, FIG. 1 shows a schematic sectional view of the method known from the prior art in which a blank 2 is deep drawn using a drawing punch 1 during the drawing operation and is cut at the same time in the drawing die 3 using a first cutting edge 4 of the drawing punch 1. The blank 2 is usually held here by a blank holder 5. Whilst the drawing punch 1 is moved into the drawing die 3, the material of the blank 2 and the drawing punch 1 are moved accordingly in the direction of the arrow shown. At the start of the cutting operation of the cutting edge, as shown in FIG. 1, the cutting edge 4 produces hardening due to the varying rapid movement in the region 2a of the blank 2. At the same time, however, the cutting edge 4 separates the blank 2 from the other part of the blank in the region of the rounded run-in portion between the supporting region 3a and the wall region 3b. Due to the hardening and the simultaneous tensile strain on the blank 2 in the cutting region, an unclea...
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
| Property | Measurement | Unit |
|---|---|---|
| drawing radius | aaaaa | aaaaa |
| movement | aaaaa | aaaaa |
| radius | aaaaa | aaaaa |
Login to View More
Abstract
The invention relates to a method for producing flangeless drawn parts from a flat and / or preformed metal blank using a drawing punch, a blank holder and a drawing die, wherein the drawing die has at least one supporting region and at least one wall region, between which rounded run-in portions are provided, and the blank is trimmed during the drawing operation. In addition, the invention relates to a method for producing flangeless drawn parts from a flat and / or preformed metal blank comprising a drawing punch, a blank holder, a drawing die with at least one supporting region, at least one wall region and rounded run-in portions, which are provided between the supporting region and the wall region.
Description
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS[0001]This patent application is a continuation of PCT / EP2012 / 057526, filed Apr. 25, 2012, which claims priority to German Application No. 102011050001.4, filed Apr. 29, 2011, the entire teachings and disclosure of which are incorporated herein by reference thereto.FIELD OF THE INVENTION[0002]The invention relates to a method for producing flangeless drawn parts from a flat and / or preformed metal blank using a drawing punch, a blank holder and a drawing die, wherein the drawing die has at least one supporting region and at least one wall region, between which rounded run-in portions are provided, and the blank is trimmed during the drawing operation. In addition, the invention relates to a device for producing flangeless drawn parts from a flat and / or preformed metal blank comprising a drawing punch, a blank holder, a drawing die with at least one supporting region, at least one wall region and rounded run-in portions, which are provided...
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
Login to View More Patent Type & Authority Applications(United States)
IPC IPC(8): B21D22/02
CPCB21D22/02B21D22/22B21D22/30B21D24/16
Inventor FLEHMIG, THOMASSAVVAS, KONSTANTINOS
Owner THYSSENKRUPP STEEL EURO AG