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Press tooling

A stamping die and die technology, applied in presses, manufacturing tools, presses for material forming, etc., can solve problems such as complex methods

Active Publication Date: 2014-03-12
COMMISSARIAT À L ÉNERGIE ATOMIQUE & AUX ÉNERGIES ALTERNATIVES FR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Other methods include mechanisms to control the movement of the segments so that the method can be automated, but these are more complex, require the use of actuators for the segments, and do not really guarantee that the segments are actually attached when the powder is poured. connection, this segment attachment is necessary for good manufacturing

Method used

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Examples

Experimental program
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Embodiment Construction

[0023] figure 1 A punching machine is shown comprising a control system 1 , an upper punch 2 , a lower punch 3 and a die 4 specific to the invention comprising a die 5 . The upper punch 2 and the lower punch 3 comprise a rod 6 and a rod 7 which are oriented towards each other. The die 5 comprises a housing 8 which is aligned with the rods 6 and 7 which can pass into the housing 8 between opposing apertures 9 and 10 . The lower piston 3 and the rod 7 of the lower piston 3 contain a needle 37 sliding there, and the rod 6 of the upper piston 2 contains a housing 11 opposite the needle 37 into which the needle 37 can penetrate. This arrangement makes it possible to compress hollow parts having a ring shape. The invention is not limited to this case, but also relates to a punch without a needle, possibly with a single punch; the housing would then be provided with a single orifice, and would contain a bottom on the other side. Control system 1 governs the movement of punches 2 a...

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PUM

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Abstract

A pressing tooling machine, including one or two punches, a die including sectors that can separate from each other but are connected to a shared primary portion, and a ring surrounding and holding the sectors, against which it is adjusted by tapered surfaces, and the altitude of which varies owing to the rotation of a crown provided with a surface in relief. When compression is finished, stripping is preceded by a slight separation of the sectors, which makes it possible to release stresses in the compressed piece and avoid many risks of damaging the piece. The sectors are made resistant by inserts made from a hard material, generally removable and able to be machined to an exact profile of the pieces to the formed.

Description

technical field [0001] The present invention relates to stamping dies. Background technique [0002] Fabrication of mechanical parts by powder compaction to obtain compact preforms, followed by sintering may involve the use of a single-shaft compression machine containing a die and punch in a housing in which The powder is poured and the punches are engaged in the housing to compress the powder, or alternatively a pair of punches are engaged in two opposite directions through two opposite ends of the housing. These presses operate at a relatively fast pace. There are many applications: it may involve metallic or ceramic mechanical parts, eg gears, magnets, fuel pellets, etc. [0003] However, such methods do have disadvantages. One of the most notable drawbacks occurs after stripping the compressed part by gradually removing it from the casing via an axial thrust movement. The compression has created radial stresses in the part which are released when the part comes out ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B22F3/03B30B11/02B30B15/02
CPCB22F3/03B30B11/02B22F2003/033B30B15/022
Inventor 让·菲利普·培尔弗雷德里克·若里翁杰拉德·蒂列特
Owner COMMISSARIAT À L ÉNERGIE ATOMIQUE & AUX ÉNERGIES ALTERNATIVES FR