Device for the removal of material arranged within a workpiece
A workpiece and orientation device technology, applied in the field of material devices, can solve problems such as long processing time, poor operation stability, and troublesome cleaning, and achieve the effects of improving operation safety, shortening processing time, and reducing cleaning costs
Inactive Publication Date: 2008-02-06
ROBERT BOSCH GMBH
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Problems solved by technology
[0005] The methods and devices that have been used so far have many disadvantages in this respect, such as long processing times, high wear in the conveying device and supply line, complicated cleaning after processing, poor working stability, generation of tensile internal stresses, possible inspection and reconditioning of the workpiece and fairly high cost
[0006] In addition, in order to remove material to process the workpiece, some devices and methods have been used, which all utilize water jets, laser beams or plasma beams to process the workpiece (see DE19849872A1, DE 19648296A1, DE 19619202A1 and US 4,817,874), these devices or A common denominator of the methods is that, based on the dimensions of the beam-generating device achievable at that time, workpiece material could only be removed externally
Inaccessible boring cutting parts etc. that happen to be inside cannot be machined by corresponding devices and methods
Method used
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[0048] 1 shows a schematic diagram of a fluidic device according to the invention, in which a water jet 1 sucks an abrasive 2 into a mixing chamber 5 so that a mixing jet 3 is produced in a conduit 6 . The medium jet 4 emerges from the conduit 6 , which is directed by means of a reflector 7 at a predetermined location in the workpiece 8 . By predetermined location is meant a location that is difficult to access, for example because a hole 9 through which the conduit 6 passes has a relatively small diameter, eg only a few millimeters.
[0049] As shown in FIG. 1, by means of the device according to the invention, the transition from the hole 9 to a second, much smaller hole 10 can be machined. In contrast to the prior art, precise material removal or rounding of the transition between the two holes 9 , 10 can be achieved with the device according to the invention.
[0050] As also shown in FIG. 1 , a fixing member 11 can be used to fix the reflector 7 on the conduit 6 .
[00...
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Abstract
A device and a method for the removal of material arranged within a workpiece (8) are disclosed, whereby at least one jet generating unit (5, 6), for generation of a material jet (4), is provided, which may be directly applied to the internal regions of the workplace (8) which are difficult to access and which also guarantees an improvement in the fatigue strength of the workpiece (8). According to the invention, the above is achieved, whereby a directing unit (12), for directing the material jet (4), arranged within the workpiece, is provided in a pre-determined region of the workpiece (8).
Description
technical field [0001] The invention relates to a device and a method for removing material arranged in a workpiece. Background technique [0002] Hitherto, internal inaccessible bore cutting points have been deburred or rounded by various methods, such as compressed fluid grinding, thermal deburring, liquid erosive rounding or electrochemical treatment. For example, in the case of compressed-fluid sanding, a viscous silicone-oil-based substance, which is admixed with abrasive particles, is pressed through existing gaps, thereby removing burrs, for example. [0003] Typically, components such as those used in the injection zones of internal combustion engines are subjected to pulsating loads at higher pressures. To this end, these components must be designed to be extremely durable. Burrs, sharp edges and scratches in the interior areas of these parts severely reduce their lasting strength. In order to meet the requirements in this respect, clean, burr-free, exactly round...
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IPC IPC(8): B24C3/32B24C1/10
CPCB24C1/083B24C3/325B24C1/10
Inventor W·霍普夫F·达尔曼斯A·马蒂斯
Owner ROBERT BOSCH GMBH