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edge blanking

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Published: 01 November 2013
Fig. 11 Typical tooling setup for fine-edge blanking a simple shape. Source: Ref 6 More
Image
Published: 01 August 2012
Fig. 1.8 Effect of punch-die clearance on part edge quality in blanking DP590 steel of 1.4 mm (0.06 in.) thickness. Source: Ref 1.4 More
Image
Published: 01 August 2012
Fig. 1.10 Effect of tool wear and blanking clearance on part edge quality as predicted by simulations on 0.58 mm (0.02 in.) thick copper alloy. Source: Ref 1.6 More
Image
Published: 01 August 2012
Fig. 1.7 Different zones of a blanked part edge More
Book Chapter

By Soumya Subramonian
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500001
EISBN: 978-1-62708-317-1
... forces. It also discusses ultra-high-speed blanking, fine blanking, and shearing, and the use finite-element simulations to predict part edge quality. blanking finite element simulations piercing shearing BLANKING AND PIERCING are metal-shearing processes in which the incoming sheet...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2013
DOI: 10.31399/asm.tb.mfub.t53740163
EISBN: 978-1-62708-308-9
... between punch and die. Clearance is important for the reliable operation of the blanking equipment, the quality and type of cut edges, and the life of the punch and die. Relief in a blanking die ( Fig. 7 ) is the taper provided to allow the severed blank to fall free. The relief angle may range from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.9781627083164
EISBN: 978-1-62708-316-4
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400233
EISBN: 978-1-62708-316-4
... without striking the bottom of the die. Metal contact is made at only three points in the cross section: the nose of the male die and the two edges of a V-shaped die opening. air cushion An air-actuated die cushion. air draw A draw operation performed in a single-action press with the blank holder...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400005
EISBN: 978-1-62708-316-4
.... Hardening anisotropy is the generalization of the well known Bauschinger effect ( Ref 2.3 ). The location of the blank in the die has a significant effect on the strain state in the sheet during deformation. Shifting the blank location increases the amount of flange material on some edges and decreases...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400161
EISBN: 978-1-62708-316-4
... and reduced scrap rate Reduce impact speed and noise Improve edge quality in blanking and shearing and increase tool life Reduce springback and improve part dimensions by controlling the dwell time at the BDC (bottom dead center) of the slide stroke Allow assembly and other secondary operations...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500249
EISBN: 978-1-62708-317-1
... ahead of the edge of the blank. Consequently, the trend to tangential cracks increases with decreasing sheet thickness. The appearance of tangential cracks depends on several machine and process parameters. A choice of a small working radius of the tool ( r < 3 s 0 ), a high feed rate, f r...
Image
Published: 01 September 2008
) (a) Rollover plus burnish approximately equals punch penetration before fracture. (b) Burnish on edge of slug or blank may be small and irregular or even absent. (c) With spotty secondary shear. (d) In two separate portions, alternating with fracture. (e) With rough surface. (f) In two More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250129
EISBN: 978-1-62708-345-4
.... Gears manufactured by this process are used in toys, clock and timer mechanisms, watches, small appliances such as mixers, blenders, toasters, and can openers, as well as larger appliances such as washers and dryers. Fine blanking (also known as fine-edge blanking) is actually more akin to cold...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ahsssta.t53700071
EISBN: 978-1-62708-279-2
... Initial holes in the blanks for the hole expansion test are produced by punching, machining, or laser cutting. A clean edge cut is important for blanked, punched, or machined holes in AHSS because the quality of the blank hole affects the level of hole expansion. Machining usually produces better finished...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400105
EISBN: 978-1-62708-316-4
... rectangular cups when blank holder force is too low: (a) flange wrinkles, (b) side wall wrinkles Fracture and Thinning Fracture may be observed as a split or tear (excessive stretching), a surface crack (excessive bending), or an edge failure (caused by an imperfection in the blanked edge...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480243
EISBN: 978-1-62708-318-8
... surface defects to avoid failure during forming, part failure in service, and to produce a blemish-free surface on the manufactured part. In addition, all blanks must be deburred prior to heating and forming. This precautionary measure minimizes the tendency for parts to edge crack during forming. Oxygen...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500051
EISBN: 978-1-62708-317-1
... is shown in Table 3.3 . The lengths of the shear and fracture zone are in good agreement with the experimental results. The error of the length of the rollover zone increases significantly with decreasing punch/die clearance. Figure 3.4 shows the predicted sheared edge from a blanking simulation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500133
EISBN: 978-1-62708-317-1
... and clearances are very well adjusted. Trimming tool performance is affected by the following factors: Slight blank movement in the moment of shearing/trimming Local clearance maladjustment Die cleanliness effect, leading to material buildup near the cutting edge Increase of blank thickness (poor...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.omfrc.t53030067
EISBN: 978-1-62708-349-2
... composite specimens in a diallyl phthalate blank Fig. 4.5 Polished boron fiber composite cross section. Bright-field illumination, 10├Ś objective Fig. 4.6 Montage showing a polished titanium fastener/polymer composite assembly. Bright-field illumination, 65 mm macrophotograph Fig...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040151
EISBN: 978-1-62708-300-3
... of exact lengths and volumes prior to forging. The method of cutting off bars is determined by the edge condition required for subsequent operations. Sawing usually produces a uniform cut edge with little or no damage to the microstructure in the immediate area. Gas cutting produces an edge that resembles...