DE102019131050A1 - Flow lapping device for smoothing a surface of a workpiece - Google Patents

Abstract

The invention relates to a flow lapping device for smoothing at least one surface of at least one workpiece (11), preferably an impeller, by means of an abrasive fluid (26), comprising at least one holding device (10) for holding the workpiece (11), in particular comprising at least one holding plate, as well as at least one wrapping device (12) arranged around the holding device (10), within which the fluid can flow, the holding device (10) being at least partially supported, in particular fixed, by at least one inner wall section (19) of the wrapping device (12).

Description

The invention relates to a flow lapping device for smoothing a surface of a workpiece, a system for assembling a flow lapping device, an arrangement comprising at least one flow lapping device, a method for assembling a flow lapping device, a method for assembling an arrangement with at least one flow lapping device and a method for smoothing at least of a workpiece.

Flow lapping devices for smoothing a surface of a workpiece are known in principle. DE 103 09 456 A1 For example, describes a device for pressure flow lapping which has at least two opposing pressure devices, the workpiece to be processed being arranged between the opposing pressure devices, and where a lapping means can be moved past the workpiece to be processed. With the help of a special device, the workpiece to be processed is positioned between the two printing devices and clamped between them. A similar solution is in WO 2015/053868 A1 shown.

However, such concepts are considered to be in need of improvement with regard to assembling or mounting the workpiece and also with regard to safety-related aspects.

It is therefore the object of the invention to propose a flow lapping device which can be prepared in the simplest possible manner for the comparatively safe performance of the flow lapping process for the workpiece to be smoothed. The flow lapping process as such should preferably be able to be carried out comparatively effectively. A further object of the invention is to provide a corresponding system for assembling a flow lapping device, a corresponding arrangement comprising at least one flow lapping device, a corresponding method for assembling a flow lapping device, a corresponding method for assembling an arrangement with at least one flow lapping device and a corresponding method for smoothing at least of a workpiece.

This object is achieved in particular by the features of claim 1.

In particular, the object is achieved by a flow lapping device for smoothing at least one surface (preferably at least one inner surface or at least one surface of a cavity) of at least one workpiece, preferably an impeller, by means of an abrasive fluid, comprising at least one holding device (for holding the workpiece), in particular comprising at least one holding plate (or formed by at least one or exactly one holding plate), as well as at least one enveloping device arranged around the holding device (circumferential side), within which the fluid can flow, the holding device at least partially by at least one (or on at least one) inner wall section of the wrapping device is supported (or held), in particular fixed. The wrapping device is preferably partially or completely (circumferentially) arranged around an outer or (in the radial direction) outermost (circumferential) edge of the holding device or holding plate.

One idea of the invention is to arrange an enveloping device around a correspondingly provided holding device or holding plate (for holding the workpiece), which is used to also support or fix the holding device. In this way, a flow lapping device can be set up in a simple manner for carrying out the flow lapping process, with a comparatively high level of safety during flow lapping being achieved in particular by shielding the holding device or holding plate (and thus the workpiece) on the circumferential side, so that, in particular, prevents or at least (further) it is made more difficult that abraded particles (grains) and / or grinding medium escape into the environment.

The above-mentioned object is achieved according to an independent (or possibly also further developing) aspect in particular by a flow lapping device for smoothing at least one surface of at least one workpiece, preferably an impeller, by means of an abrasive fluid, comprising at least one holding device, in particular component platform (for holding the Workpiece), preferably comprising at least one holding plate (or formed by at least one or precisely one holding plate), at least one wrapping device arranged around the holding device (circumferential), within which the fluid can flow, and at least one fluid-conducting device (provided separately from the wrapping device) (in particular fluid guide insert), which is arranged or can be arranged within the wrapping device, in particular used or can be used, in order to divert the fluid at least regionally within the wrapping device. The wrapping device is preferably arranged (circumferentially) around an outer or outermost (circumferential) edge of the holding device or holding plate.

The at least one fluid guide device (the at least one fluid guide insert) is preferably configured such that the fluid, when it flows in the direction of the workpiece, is guided to at least one opening in the workpiece. Alternatively or In addition, the at least one fluid guide device (or possibly a further fluid guide device) can also be configured in such a way that the fluid, when it flows in the direction of the workpiece, flows against an (inner and / or outer) surface of the workpiece.

A further idea of the invention is therefore in particular to arrange the holding device (holding plate) within a wrapping device, and at the same time also to arrange a (separate) fluid guiding device within the wrapping device, which, due to its guiding or diversion of the fluid, can make the fluid particularly effective applied to the surfaces that are ultimately to be smoothed. This enables effective smoothing to take place in a simple manner.

A wrapping device is to be understood as meaning, in particular, a device that envelops (encases) the holding device (holding plate) and in particular also the workpiece (if it is arranged within the flow lapping device) on the circumferential side. In particular, the holding device (holding plate) and possibly also the workpiece should be shielded to the side (laterally or circumferentially) by the wrapping device (i.e. especially when the flow lapping device is ready for operation in directions that are at least essentially horizontal and / or in directions which are at least substantially perpendicular to a direction of movement of a first and / or second printing device, in particular printing cylinder, or the like).

The wrapping device can (in the general sense) form a cylinder, for example with a round, in particular circular, or polygonal, in particular square or hexagonal or octagonal radial section.

Support by at least one inner wall section of the wrapping device is to be understood in particular to mean that the corresponding inner wall section at least partially contributes (possibly completely causes) that the holding device (holding plate) remains (is held), in particular at a certain height. For this purpose, the inner wall section can, for example, have at least one corresponding recess and / or at least one corresponding projection and / or at least one corresponding step. A fixation is to be understood in particular to mean that the holding device (holding plate) is at least partially (possibly completely) held in place at a specific location by the corresponding inner wall section of the wrapping device. In particular, this also includes a fixation against lifting (for example in the case of compressive forces from below).

The holding device is preferably formed separately (non-monolithically or not in one piece) with respect to the wrapping device and / or is formed from a different material than the wrapping device.

At least one outer edge (an outer edge) of the holding device or holding plate preferably rests directly on the supporting or fixing inner wall section of the wrapping device.

The fluid guide device (in particular a fluid guide device or fluid guide device) preferably comprises a fluid guide insert or is formed by such an insert. A fluid guide insert is to be understood in particular as an insert which is or can be used as a separate component in the encasing device. The fluid-conducting device (or the fluid-conducting insert) preferably does not constitute a seal to the outside (such as, in particular, the enveloping device, which preferably provides such a seal). In particular, the fluid guide device (or the fluid guide insert) should not define an outer wall that delimits a volume in which the abrasive fluid is located or can flow from the outside. The (respective) fluid guiding device can optionally be a one-piece, in particular monolithic body. The (respective) fluid guide device (fluid guide insert) can be formed at least in sections, if necessary completely, from plastic and / or metal and / or ceramic.

The workpiece is preferably an impeller and / or has: an at least substantially round cross section and / or a cylindrical outer surface and / or at least one, possibly exactly one, central opening, in particular on a base, and / or at least one radially oriented Opening (preferably at least two or at least four radially oriented openings), in particular on / on a cylindrical outer surface.

The wrapping device preferably comprises at least a first, in particular lower, and a second, in particular upper, wrapping part. The (two or) more enveloping parts can be aligned with one another on at least one outer and / or inner side, in particular so that no step is formed between the respective enveloping parts (in particular in the sense that no step is formed that is only caused by an offset between the respective outer sides or inner sides; this in particular does not exclude that the respective enveloping part has a step close to the respective adjacent enveloping part, which is even preferred). The enveloping parts can (at least approximately) have the same height or a different height. If the enveloping parts have a different height, the height of the (respective) smaller enveloping part can be at least 20%, possibly at least 50% or at least 80% of the height of the (respectively) larger one Have wrapping part. Insofar as a “height” is mentioned here (or further above and also further below), this is to be understood in particular as a vertical extension of the respective entity referred to. However, this can also be understood to mean a dimension in one direction which is predetermined by two correspondingly provided pressure devices for pressurizing the fluid (in particular pressure pistons).

The wrapping device (preferably at least one or more or all of the wrapping parts, each individually or in combination) is preferably designed, at least one height section which contains the (possibly complete) holding device (holding plate) and / or the (possibly complete) workpiece , in particular to enclose (encase) the entire circumference.

The second (or further) wrapping part is preferably a wrapping part that is structurally delimited from the first wrapping part, in particular can be removed therefrom (non-destructively, preferably by hand) and / or can be connected to it manually (directly or indirectly) . As a result, the construction or assembly of the flow lapping device for carrying out a flow lapping process and / or its dismantling can be simplified.

The holding device can be inserted into the wrapping device (in particular between the first and second wrapping part). Alternatively or additionally, the holding device can be clamped in the wrapping device (in particular between the first and second wrapping part). As a result, the holding device (holding plate) can be arranged (assembled) within the wrapping device or a reliable seal can be achieved in a simple manner.

The enveloping device and / or the first and / or the second enveloping part can form an annular jacket, preferably a hollow cylinder, preferably circular or polygonal in cross section, in particular quadrangular. In this way, shielding can be ensured in an effective and simple manner.

In one embodiment, the at least one holding device (holding plate) is arranged, preferably at the level of a transition between the first and second enveloping part. As a result, the two enveloping parts can be used in a simple manner in order to support the holding device (holding plate), in particular to fix it.

At least one projection and / or at least one step, on which the holding device is preferably placed, can be formed on an inner wall of the wrapping device, preferably at least on an inner wall of the first wrapping part.

An annular, in particular annular groove-shaped, receiving space can be formed on the inner wall of the wrapping device, a peripheral edge of the holding device being received in the receiving space.

A step can optionally be implemented by an offset of an inner wall (radially) inward, this offset possibly not decreasing again (as in the case of a projection). In particular, a step is to be understood as an alternative to a projection. In any case, by means of such measures, a corresponding holding device (holding plate) and thus also the workpiece for performing the fluid lapping can be installed in a simple manner (without tools).

Preferably, mutually facing ends of the first and second enveloping part (together) form a, preferably ring-shaped, in particular ring-groove-shaped, receiving space for receiving a peripheral edge of the holding device (holding plate). For this purpose, at least one of the ends adjoining one another, preferably both ends adjoining one another, preferably has a step and / or a (inwardly directed) projection. An annular groove-shaped receiving space is to be understood in particular as a receiving space which is (at least essentially) U- or V-shaped in cross section and / or in particular does not have an open bottom. Such a measure allows the flow lapping device to be prepared for the flow lapping process in a simple manner.

Ends of the first and second enveloping parts facing one another can abut one another or have a distance from one another, possibly sealed, in particular form a gap (annular gap). If a gap is present, the holding device or holding plate itself can seal in a simple manner - in cooperation with the respective enveloping part. If a gap (annular gap) is formed, preferably no section of the holding device (holding plate) should be arranged in this.

The adjoining ends of the first and second enveloping parts preferably do not touch one another. For (additional) sealing, a sealing structure (or sealing element), in particular comprising a sealing groove with a sealing ring, can be arranged on at least one of the ends.

In preferred embodiments, the holding device or holding plate (possibly exclusively the holding device or holding plate) the two enveloping parts from one another

A connection between the holding device (holding plate) and the wrapping device can optionally be formed without (separate) connecting devices or at least without screws and / or without bolts and / or without (separate) clamping devices. Alternatively or additionally, the same applies to a connection between the first and second enveloping parts and / or for a connection between the holding device (holding plate) and the first enveloping part and / or a connection between the holding device (holding plate) and the second enveloping part.

A first closing device can be arranged at a first (in particular lower) end of the wrapping device. The first locking device preferably comprises a first pressure device, which preferably comprises a first (locking and / or pressure) cylinder and / or a first pressure piston (displaceable in the first locking device, in particular the first cylinder). Alternatively or additionally, a second closing device can be arranged at a second (in particular upper) end of the wrapping device. The second locking device preferably comprises a second pressure device, which preferably comprises a second (locking and / or pressure) cylinder and / or a second pressure piston (displaceable in the second locking device, in particular the second cylinder).

The flow lapping device preferably comprises at least one, preferably separate, fluid-conducting device (in particular the above fluid-conducting device) arranged in particular within the wrapping device, preferably in order to guide the fluid in a targeted manner past the workpiece and / or through the workpiece.

The flow lapping device preferably comprises a first fluid conducting device, which is arranged on a first side, preferably below the holding device (holding plate) and / or is arranged within the first enveloping part, at least one internal cross section of the first fluid device preferably changing, in particular becoming larger, in the direction of the holding device ; and / or a second fluid guide device, which is arranged on a second side, preferably above the holding device, and / or is arranged within the second enveloping part, at least one internal cross section of the second fluid guide device preferably changing in the direction of the holding device, in particular initially larger and then gets smaller; and or a third fluid-conducting device, which is arranged on one (the) second side, preferably above the holding device, and / or is arranged within the second enveloping part, at least one external cross-section of the third fluid-conducting device preferably changing, in particular becoming larger, in the direction of the holding device, wherein the third fluid guide device is preferably compact (without openings) and / or is arranged within the second fluid guide device.

In a further embodiment, at least one spacer (preferably as part of one, in particular the third, fluid guide device) is provided in order to (further) space the workpiece from a cover and / or a base, preferably a (separate, preferably non-destructive, from the spacer) possibly by hand or by means of a tool, removable) spacer extension is provided in order to enable a larger and / or variable spacing (possibly without changing the third fluid guide device). The spacer extension is preferably provided as a separate component opposite the (actual) spacer and can in particular be placed and / or slipped onto it. The spacer and / or the spacer extension can (each) have at least one or at least two, possibly at least four, rods (or rods) in order to enable a secure spacing. By means of such a spacer or such a spacer extension, simple and precise assembly (without tools) of the flow lapping device can take place. Due to the (respective) length of the spacer, in particular the rods, a variable total distance can be achieved without z. B. the third fluid guiding device has to be changed.

According to the embodiment, the holding device has at least one opening which can preferably be brought or is brought into congruence with at least one opening of at least one workpiece. This allows the (abrasive) fluid to be used effectively for the smoothing process.

The flow lapping device preferably comprises at least one fastening device in order to fasten at least one workpiece of a holding device, preferably a plurality of fastening devices, in particular in order to be able to fasten a plurality of workpieces to the holding device. Such a fastening device can, for example, comprise or enable a form-fit and / or force-fit fastening (connection), in particular enable fastening by plugging and / or clamping and / or screws.

According to the embodiment, the flow lapping device can be designed in several stages, preferably in such a way that at least two holding devices (holding plates), preferably one above the other and / or one behind the other in the fluid flow direction, wherein at least one workpiece can be arranged (or is arranged) on each holding device and / or in such a way that at least one third enveloping part is provided, which is preferably between the first and second enveloping part or above the second enveloping part is arranged. As a result, a large number of workpieces can be smoothed in a simple and safe manner.

The above-mentioned object is in particular further achieved by a system for assembling a flow lapping device for smoothing at least one surface of at least one workpiece (of the above type), the system comprising a holding device, in particular comprising at least one holding plate, for holding the workpiece, as well as at least one wrapping device, within which the fluid can flow (or flows around), wherein the wrapping device can be arranged (or is arranged) around the holding device in such a way that the holding device is at least partially supported, in particular fixed, by at least one inner wall section of the wrapping device. With regard to the advantages of the system, reference is made to the above statements on the flow lapping device.

The system preferably comprises at least two different, more preferably at least two different first and / or second and / or third fluid conducting devices, which can be arranged in particular at the same location and / or preferably differ by an external geometry and / or an internal geometry, possibly only by an outer geometry or only by an inner geometry and / or a height and / or a diameter, in particular an inner diameter and / or an outer diameter, and / or a shape, in particular an outer and / or an inner shape, and / or a material.

Such a system (or set) allows the flow lapping device to be adapted in a simple manner to different uses, in particular different surfaces or workpieces to be smoothed. As a result, the variability in the flow lapping device can be increased.

The above-mentioned object is also achieved in particular by an arrangement comprising at least one flow lapping device of the above type and at least one workpiece, with the following preferably applies: at least one workpiece adjoins (directly) the holding device and preferably rests (directly) on the holding device; and / or at least one opening of the workpiece is at least partially in line with at least one opening of the holding device and / or with at least one opening of at least one fluid guide device; and / or at least one fluid guide device adjoins (directly) the workpiece; and / or at least one fluid guide device rests (directly) on the workpiece; and / or at least one fluid guide device is arranged at least in sections around the workpiece.

The above-mentioned object is also achieved in particular by a method for assembling a flow lapping device of the above type, the method preferably comprising the following steps: a) arranging at least part of one of the wrapping devices, in particular the first wrapping part, on a first closing device; b) Arranging the holding device in the wrapping device, in particular in that the holding device is initially arranged on (on) the first wrapping part and then a second wrapping part of the wrapping device is arranged on (on) the holding device and / or on (on) the first wrapping part ; and c) arranging a second closing device on (on) the wrapping device, in particular on (on) the second wrapping part. Steps a), b) and c) can be carried out in the order according to the alphabet or in a different order (for example c) - b) - a)).

A flow lapping device is preferably assembled without tools, in particular (only) by plugging the elements into one another. In terms of the device, the flow lapping device is preferably configured accordingly. As a result, a preparation of the flow lapping device for carrying out the flow lapping process can be achieved in a simple manner.

The holding device is preferably arranged (directly) on at least one first fluid-conducting device, in particular placed on it, and / or at least one second fluid-conducting device is arranged (directly) on the holding device, in particular placed on it.

According to the embodiment, the holding device can be fixed or fixed between the first enveloping part and the second enveloping part, in particular by applying pressure to the first and / or second enveloping part (preferably pressing the first and second enveloping part against one another).

The above object is also achieved in particular by assembling the above arrangement, comprising the method for assembling a flow lapping device, wherein before or after step b) at least one workpiece is arranged on (on) the holding device, the workpiece preferably (in the operating state) is not pressurized and / or only with the holding device and / or possibly fastening device (s) comes into contact.

At least one third fluid conducting device is preferably arranged (directly) on the workpiece, in particular placed on it.

The above-mentioned object is also achieved in particular by a method for smoothing at least one workpiece, comprising the steps: providing the above arrangement (comprising at least one flow lapping device); and flowing through, in particular bi-directional flowing through, the arrangement in such a way that at least one surface of the workpiece, in particular at least one inner surface, preferably of an impeller, is smoothed.

The (respective, in particular the respective first and / or second) fluid guide device preferably comprises at least one opening (possibly a bore).

The (respective) fluid guide device is preferably formed from plastic and / or by means of an additive manufacturing process. The plastic can preferably comprise polyolefin, in particular polyethylene and / or polypropylene, and / or at least one polyamide, in particular PA 6. In the case of polyamide (such as PA 6) in particular, a fluid guide device can be provided in a comparatively simple manner that is sufficiently resistant to wear (due to abrasive fluids).

The holding device and / or the workpiece is preferably not in (direct) contact with a closing device (in particular an upper cover part or a lower base part of the flow lapping device).

The workpiece is preferably only connected or in contact with the holding device. In this respect, the wrapping device (or the respective wrapping part) also enables the workpiece not to be directly subjected to the pressure of a closing device.

In general, the invention enables the machining of complex external and / or internal geometries with comparatively little effort. If necessary, small series and series processing (especially in two-way mode) can be made possible. Component damage (for example by a closing mechanism of the flow lapping device) and / or pressurization (for example more than 50 bar or more than 100 bar) can be prevented (at least with a higher probability).

In addition to cyclical (one-sided) machining, two-way machining is also possible. In general, safety, in particular work safety, is improved on the flow lapping device.

The possibility of using a counter pressure means that more areas of surfaces, in particular channel surfaces, can be reached.

In particular, a closed system is provided in which the fluid envelops the workpiece and, if necessary, is only pressed through the workpiece through defined openings.

By changing (specific) holding devices (holding plates or component platforms), different workpieces (components) can be processed in the flow lapping device.

Optionally, different clamping systems (possibly simultaneously or jointly) can be used as clamping devices for fastening the workpiece (component) on the holding device (component platform).

According to the invention, a set is thus also comprising the components of the above flow lapping device and various holding devices (holding plates or component platforms) that differ from one another, in particular in terms of size and / or shape and / or fastening devices for fastening the respective workpiece.

Further embodiments emerge from the subclaims.

The invention is described below on the basis of exemplary embodiments, which are explained in more detail with the aid of the figures.

• 1 eine schematische Schnittansicht einer erfindungsgemäßen Fl ießläppvorrichtung;
• 2 die Fließläppvorrichtung gemäß 1 mit Fluidleitvorrichtungen;
• 3 eine alternative Ausführungsform einer erfindungsgemäßen Fließläppvorrichtu ng;
• 4 eine schematische Schnittansicht einer weiteren Ausführungsform einer erfindungsgemäßen Fließläppvorrichtung;
• 5 eine schematische Schnittansicht eines Ausschnittes einer erfindungsgemäßen Fließläppvorrichtung;
• 6 eine Schrägansicht von Bestandteilen einer erfindungsgemäßen Fließläppvorrichtu ng;
• 7a-7e verschiedene Abschnitte eines Verfahrens zum Herrichten einer erfindungsgemäßen Fließläppvorrichtung;
• 8 eine Schräg-Schnittansicht der Fließläppvorrichtung gemäß 6;
• 9 einen erfindungsgemäßen Abstandshalter für die Fließläppvorrichtung; und
• 10 eine erfindungsgemäße Abstandshalterverlängerung für die Fließläppvorrichtung.

Here show:

• 1 a schematic sectional view of a floppy lapping device according to the invention;
• 2 the flow lapping device according to 1 with fluid guide devices;
• 3 an alternative embodiment of a flow lapping device according to the invention;
• 4th a schematic sectional view of a further embodiment of a flow lapping device according to the invention;
• 5 a schematic sectional view of a detail of a flow lapping device according to the invention;
• 6th an oblique view of components of a flow lapping device according to the invention;
• 7a-7e various portions of a method for preparing a flow lapping apparatus according to the invention;
• 8th an oblique sectional view of the flow lapping device according to FIG 6th ;
• 9 a spacer according to the invention for the flow lapping device; and
• 10 a spacer extension according to the invention for the flow lapping device.

In the following description, the same reference numbers are used for parts that are the same and have the same effect.

1 shows a flow lapping device according to the invention in a schematic sectional view. The flow lapping device comprises a holding device 10 (in the form of a holding plate or component platform). On the holding device 10 is a workpiece 11 (z. B. in the form of an impeller) arranged.

Furthermore, the holding device 10 on a wrapping device 12th fixed. The wrapping device 12th comprises a first wrapping part 13th and a second wrapping part 14th in the form of hollow cylinders (e.g. circular in cross section).

First and second wrapping part 13th , 14th can abut one another or touch one another or be (at least slightly) spaced apart from one another (e.g. by a gap that may be sealed off).

The first wrapping part 13th has a stage 15th on, on (in) one edge or one (circumferential) edge 16 the holding device 10 is arranged (placed).

The second wrapping part 14th has a complementary level 17th on that common with the first stage 15th an annular groove-shaped receptacle 18th trains. Through this annular groove-shaped receptacle 18th is the holding device 10 within the wrapping device 12th , specifically through an inner wall section 19th same fixed.

The holding device 10 has (at least) one opening 20th on so that abrasive fluid 26th through this opening 20th into a (corresponding) opening 21 of the workpiece 11 can penetrate to an inner (cavity) surface of the workpiece 11 to smooth out.

The fluid 26th can by a first (lower) pressure piston 23 and a second (upper) pressure piston 24 be pressurized so that the fluid can flow either from top to bottom or from bottom to top (as shown by the arrows 25th indicated). The first plunger 23 is in or on a first (lower) locking device 27 arranged, the second pressure piston 24 is in or on a second (upper) locking device 28 arranged.

The second (upper) locking device 28 does not rely on the workpiece 11 off, but on the wrapping device 12th or their second enveloping part 14th . This can effectively prevent the workpiece from being adversely affected by a closing pressure 11 caused.

The workpiece 11 points next to the opening 21 further openings 31 , 32 (which are preferably oriented in the lateral direction).

2 basically shows the flow lapping device according to FIG 1 , but with additional fluid guide inserts. Specifically, is located below the holding device 10 a first fluid guide insert 33 as well as above the holding device 10 a second fluid guide insert 34 and a third fluid guide insert 35 .

The first fluid guide insert 33 has a fluid guide that extends (continuously) in the direction of the holding device 10 or their opening 20th rejuvenates. A corresponding one through the first fluid guide insert 33 The cavity formed is preferably conical or frustoconical.

Above the holding device 10 and also above the workpiece 11 is the third fluid guide device 35 which is designed without an internal cavity and starting from the workpiece 11 rejuvenates. An outer surface of the second fluid conducting insert 35 is preferably shaped like a cone or a truncated cone.

The second fluid guide insert 34 again has a cavity, the cross section of which extends from the holding device 10 initially expanded and then tapered again. The (continuous) expansion is (immediately) adjacent to the openings 31 , 32 of the workpiece 11 at. Overall, this can be done in an effective manner with the given geometry of the workpiece 11 (in particular an impeller) an effective passage or diversion of the fluid take place.

3 shows an alternative embodiment, which is basically the embodiment according to 1 corresponds to. In the embodiment according to 3 however, there are several openings in the holding device 20th provided and several workpieces 11 (according to the number of openings) arranged. The number of openings and / or workpieces can be at least two or at least three or at least five (for example seven, as in 3 shown).

4th shows a further embodiment of the flow lapping device according to the invention, which is at least partially according to the embodiment 3 corresponds to. In addition to the embodiment according to 3 comprises the embodiment according to 4th a two-stage configuration with two holding devices 10 (each like the holding device 10 in 3 can be configured). On each of the holding devices 10 is a variety of workpieces 11 arranged. In addition to the two enveloping parts 13th , 14th is in the embodiment according to 4th a third wrapping part 36 intended. This third wrapping part 36 includes a stage 17a analogous to the stage 17th of the second wrapping part. The second wrapping part 14th in 4th includes a stage 15a analogous to the stage 15th of the second wrapping part.

In 5 are different solutions for fastening the respective workpiece on the holding device 10 illustrated. For the sake of clarity, these are all in one figure, namely 5 shown, but can also be used independently of one another.

For fastening a workpiece 11 can according to 5 in particular a clamping device 37 (in particular clamping adapter) are used and / or a clamping device 38 (in particular clamping claw), and / or a pipe or nozzle 39 (in particular threaded pipe) and / or a screw device 40 .

6th shows a further embodiment of a flow lapping device according to the invention in the assembled state. Based on 7a to 7e individual steps of a method for preparing the flow lapping device for a flow lapping process are explained (whereby not each individual step is also explained on the basis of an individual figure, but rather steps are also partially summarized in one figure).

First, according to 7a a basic facility 46 (Base plate) provided on which then the first enveloping part 13th is arranged. After that, it is inside the wrapping part 13th the first fluid guide device 33 arranged.

Thereupon (see 7b) becomes the holding device 10 (Holding plate) on the first fluid guide device 33 or in particular to the stage 15th of the first wrapping part 13th hung up. Then the second wrapping part 14th on the first wrapping part 13th as well as the holding device 10 placed and then the second fluid guide device 34 on the holding device 10 hung up.

In a next step (see 7c ) becomes the workpiece 11 into the second fluid guide device 34 or on the holding device 10 put on or put on. Alternatively, the workpiece 11 also beforehand with the holding device 10 get connected.

In 7d is the third fluid guide device 35 shown on the workpiece 11 is placed and at the same time has a spacing function. Above the second 34 and third 35 fluid guiding device there is in turn an upper cover device 42 (please refer 7e) arranged. The resulting structure is again in an oblique sectional view in 8th shown.

The configuration according to 7e or. 8th can then form the flow lapping device (possibly with further parts, such as pressure pistons and the like, not shown) and is prepared to carry out a flow lapping process.

In 9 is the third fluid guide device 35 shown in an oblique view. In particular, there are several bars here 43 shown, which ensure the spacing function. In general, at least one or at least two or at least 4 and / or at most 20 or at most 10 rods 43 are present.

In 10 is a spacer extension 44 on the spacer or the second fluid guide device 34 on 9 can be put on. For this purpose, the spacer extension 44 also bars 45 on, via a respective plug-in device 47 with corresponding plug-in devices 48 can be brought into plug connection. With the plug-in devices 47 can it (as in 10 shown) are protrusions or (as not in 10 shown) around corresponding recesses. The plug-in devices 48 can recesses (as in 9 shown) or reverse projections (in particular analogous to the projections according to FIG 10 ).

At this point, it should be pointed out that all of the parts described above, seen on their own and in any combination, in particular the details shown in the drawings, are claimed as embodiments of the invention. Changes to this are familiar to the person skilled in the art.

List of reference symbols

10

Holding device

11

workpiece

12th

Wrapping device

13th

first wrapping part

14th

second wrapping part

15, 15a

step

16

Edge

17, 17a

step

18th

Recording / recording room

19th

Inner wall section

20th

opening

21

opening

23

first plunger

24

second plunger

25th

row

26th

Fluid

27

first locking device

28

second locking device

31

opening

32

opening

33

first fluid guide insert

34

second fluid guide insert

35

third fluid guide insert

36

third wrapping part

37

Clamping device

38

Clamping device

39

Pipe or nozzle

40

Screwing device

42

Lid device

43

Rod

44

Spacer extension

45

Rod

46

Basic equipment (base plate)

47

Plug-in device

48

Plug-in device

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• DE 10309456 A1 [0002]
• WO 2015/053868 A1 [0002]

Claims (25)

Flow lapping device for smoothing at least one surface of at least one workpiece (11), preferably an impeller, by means of an abrasive fluid (26), comprising at least one holding device (10) for holding the workpiece (11), in particular comprising at least one holding plate and at least one around the An enveloping device (12) arranged around the holding device (10), within which the fluid can flow, the holding device (10) being at least partially supported, in particular fixed, by at least one inner wall section (19) of the enveloping device (12). Flow lapping device, especially after Claim 1 for smoothing at least one surface of at least one workpiece (11), preferably an impeller, by means of an abrasive fluid (26), comprising at least one holding device (10) for holding the workpiece (11), in particular comprising at least one holding plate, at least one around the holding device (10) wrapping device (12) arranged around it, within which the fluid can flow, as well as at least one fluid conducting device (33, 34, 35) which is arranged, in particular inserted, inside the wrapping device (12), in order to circulate the fluid within the wrapping device ( 12) at least regionally, in particular in such a way that the fluid, when it flows in the direction of the workpiece (11), is directed to at least one opening (21) in the workpiece (11). Flow lapping device according to Claim 1 or 2 wherein the wrapping device (12) comprises at least a first (13), preferably lower, and a second (14), preferably upper, wrapping part. Flow lapping device according to one of the preceding claims, in particular according to Claim 3 , wherein the holding device (10) is inserted into the wrapping device (12), in particular between the first (13) and second (14) wrapping part, and / or in the wrapping device (12), in particular between the first (13) and second (14) wrapping part , is jammed. Flow lapping device according to one of the preceding claims, in particular according to Claim 3 or 4th , the wrapping device (12) and / or the first (13) and / or the second (14) wrapping part forming a ring jacket, preferably a hollow cylinder, preferably circular or polygonal in cross section, in particular square. Flow lapping device according to one of the preceding claims, in particular according to one of the Claims 3 to 5 , wherein the at least one holding device (10) is preferably arranged at the level of a transition between the first (13) and second (14) enveloping part. Flow lapping device according to one of the preceding claims, wherein at least one projection and / or at least one step (15) is formed on an inner wall of the wrapping device (12), preferably at least on an inner wall of the first wrapping part (13), on which preferably the holding device (10) is placed and / or an annular, in particular annular groove-shaped, receiving space (18) is formed on one / the inner wall of the wrapping device (12), a peripheral edge of the holding device (10) being received in the receiving space (18). Flow lapping device according to one of the preceding claims, in particular according to one of the Claims 3 to 7th Adjacent ends of the first (13) and second (14) enveloping part form a preferably ring-shaped, in particular ring-groove-shaped, receiving space (18) for receiving a peripheral edge of the holding device (10), with at least one of the adjacent ends, preferably both have adjoining ends, a step or a protrusion. Flow lapping device according to one of the preceding claims, in particular according to one of the Claims 3 to 8th whereby ends of the first (13) and second (14) enveloping parts adjoining one another abut one another or have a distance from one another, possibly sealed, in particular forming a gap. Flow lapping apparatus according to any one of the preceding claims, wherein a first locking device (27) is arranged at a first, in particular lower, end of the wrapping device (12), the first locking device preferably comprising a first cylinder and / or a first pressure piston (23) and / or a second closing device (28) is arranged at a second, in particular upper, end of the wrapping device (12), the second closing device preferably comprising a second cylinder and / or a second pressure piston (24). Floating lapping device according to one of the preceding claims, comprising at least one, in particular separate, fluid-conducting device (33, 34, 35), preferably arranged within the wrapping device (12), to guide the fluid (26) past and / or through the workpiece (11) in a targeted manner to guide the workpiece through it. Flow lapping device according to one of the preceding claims, in particular according to one of the Claims 2 to 11 , comprising a first Fluid guide device (33), which is arranged on a first side, preferably below the holding device (10) and / or is arranged within the first enveloping part (13), at least one inner cross section of the first fluid guide device (33) preferably extending in the direction of the holding device ( 10) changes, in particular becomes larger, and / or comprising a second fluid guide device (34) which is arranged on a second side, preferably above the holding device (10) and / or is arranged within the second enveloping part (14), with at least one internal cross-section of the second fluid guide device (34) preferably changes in the direction of the holding device, in particular initially becomes larger and then smaller, and / or comprising a third fluid guide device (35) which, on one / the second side, preferably above the holding device (10), is arranged and / or is arranged within the second enveloping part (14), wherein at least one Außenqu Section of the third fluid guide device (35) preferably changes in the direction of the holding device, in particular becomes larger, the third fluid guide device preferably being of compact design and / or being arranged within the second fluid guide device. Floating lapping device according to one of the preceding claims, comprising at least one spacer (43), preferably as part of one, in particular the third, fluid guide device (35), in order to space the workpiece (11) from a cover part and / or a base part, preferably a spacer extension (44) is provided to allow greater spacing. Flow lapping device according to one of the preceding claims, wherein the holding device (10) has at least one opening (20) which can preferably be brought into congruence with at least one opening (21) of at least one workpiece (11). Floating lapping device according to one of the preceding claims, comprising at least one fastening device to fasten at least one workpiece to the holding device (10), preferably comprising a plurality of fastening devices, in particular in order to be able to fasten a plurality of workpieces to the holding device. Flow lapping device according to one of the preceding claims, wherein the flow lapping device is designed in several stages, in particular such that at least two holding devices (10), preferably one above the other and / or one behind the other in the fluid flow direction, are formed, with at least one workpiece (11) on each holding device (10). can be arranged and / or such that at least one third enveloping part (36) is provided, which is preferably arranged between the first (13) and second (14) enveloping part or above the second enveloping part (14). System for assembling a flow lapping device for smoothing at least one surface according to one of the preceding claims, wherein the system comprises a holding device (10), in particular comprising at least one holding plate for holding the workpiece (11), and at least one wrapping device (12) within which the fluid is flowable, wherein the wrapping device (12) can be arranged around the holding device (10) in such a way that the holding device (10) is at least partially supported, in particular fixed, by at least one inner wall section (19) of the wrapping device (12). System according to Claim 17 for assembling a flow lapping device according to one of the Claims 1 to 16 , especially after one of the Claims 2 to 16 , wherein the system comprises at least two different, preferably at least two different first (33) and / or two different second (34) and / or two different third (35) fluid guide devices, which can preferably be arranged at the same location and / or are preferably located distinguish by: - an external geometry and / or an internal geometry, possibly only by an external geometry or only by an internal geometry and / or - a height and / or - a diameter, in particular an internal diameter and / or an external diameter and / or - a shape, in particular an outer and / or an inner shape, and / or - a material. Arrangement comprising at least one flow lapping device according to one of the Claims 1 to 16 , and at least one workpiece (11), with the following in particular: - at least one workpiece (11) adjoins the holding device (10) and preferably rests on the holding device (10) and / or - at least one opening (21) in the workpiece (11) is at least partially in line with at least one opening (20) of the holding device (10) and / or with at least one opening of at least one fluid guide device and / or - at least one fluid guide device adjoins the workpiece (11) and / or - at least a fluid guide device rests on the workpiece (11) and / or - at least one fluid guide device is arranged at least in sections around the workpiece (11). Method for assembling a flow lapping device according to one of the Claims 1 to 16 , the method preferably comprising the following steps: a) arranging at least part of the wrapping device (12), in particular the first wrapping part, on a first closing device; b) Arranging the holding device (10) in the wrapping device (12), in particular in that the holding device (10) is initially arranged on the first wrapping part (13) and then a second wrapping part (14) of the wrapping device (12) is arranged on the holding device (10) and / or is arranged on the first enveloping part (13); c) Arranging a second closing device on the wrapping device (12), in particular on the second wrapping part (14). Procedure according to Claim 20 , wherein the holding device is arranged on at least one first fluid-conducting device (33), in particular being placed on top and / or at least one second fluid-conducting device (34) is arranged, in particular being placed on the holding device (10). Procedure according to Claim 20 or 21 , wherein the holding device is fixed between the first wrapping part (13) and the second wrapping part (14), in particular by applying pressure to the first (13) and / or second (14) wrapping part. Method for assembling an arrangement according to Claim 19 , comprising the method of any one of Claims 20 to 22nd , wherein before or after step b) at least one workpiece (11) is arranged on the holding device (10), wherein the workpiece (11) is preferably not subjected to pressure and / or only with the holding device (10) and / or possibly Fastening device comes into contact. Procedure according to Claim 23 , wherein at least one third fluid guide device (35) is arranged on the workpiece (11), in particular is placed on it. A method for smoothing at least one workpiece (11), comprising the steps of: - providing an arrangement according to Claim 19 ; - Flow, in particular bi-directional flow, of the arrangement in such a way that at least one surface of the workpiece (11), in particular at least one inner surface, is smoothed.

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