CN101500722B - Device and method for forming a workpiece - Google Patents
Device and method for forming a workpiece Download PDFInfo
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- CN101500722B CN101500722B CN2007800294003A CN200780029400A CN101500722B CN 101500722 B CN101500722 B CN 101500722B CN 2007800294003 A CN2007800294003 A CN 2007800294003A CN 200780029400 A CN200780029400 A CN 200780029400A CN 101500722 B CN101500722 B CN 101500722B
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- workpiece
- forming tool
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- forward stroke
- feed arrangement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/004—Extruding metal; Impact extrusion using vibratory energy
Abstract
The invention relates to a device (1) for forming, in particular for cold forming, here in particular for cold extruding, a workpiece (2), which device (1) has a forming die (3) and a feed device (5), by means of which a relative movement can be generated between the workpiece (2) and the forming die (3), wherein the device (1) has a frequency generating device (10) which interacts with the feed device (5), by means of which frequency generating device (10) the relative movement between the workpiece (2) and the forming die (3) as generated by the feed device (5) can be modulated in such a way that, after a forward stroke in which the workpiece (2) and/or the forming die (3) passes through a first stroke travel in the feed direction (P), in a subsequent rearward stroke, a movement of the forming die (3) and/or of the workpiece (2); by a second stroke travel can be carried out in a direction counter to the feed direction (P). It is provided according to the invention that the frequency generating device (10) modulates the feed device (5) in such a way that the stroke travels of the forward strokes and/or of the rearward strokes of at least two successive forming steps, composed in each case of a forward stroke and a rearward stroke, of the device (1) are different.
Description
Technical field
The present invention relates to a kind of being used for forms workpiece, particularly cold deformation, the device of cold flow extruding particularly here; This device has a forming tool and a feed arrangement, can produce the relative motion between workpiece and the forming tool through said feed arrangement, wherein this device have one with the coefficient frequency generator of feed arrangement; Can regulate like this relative motion between workpiece and forming tool that produces by feed arrangement through said frequency generator, that is, and after a forward stroke; In the backstroke that follows thereafter, can along a direction opposite with direction of feed realize forming tool and/or workpiece through the moving of one second stroke distance, wherein; Workpiece and/or forming tool carry out through one first travel paths along direction of feed in this forward stroke; The invention still further relates to a kind of method that workpiece is formed of being used for, in the method, through and feed arrangement produce the relative motion between a workpiece and the forming tool; Wherein, Like this workpiece that produced by feed arrangement and the said relative motion between the forming tool are regulated, that is, and after a forward stroke; In the backstroke that follows thereafter; Along a direction opposite realization forming tool and/or workpiece with direction of feed through the moving of one second travel paths, in this forward stroke, workpiece and/or forming tool carry out through one first stroke distance along direction of feed.
Background technology
The known such apparatus and method of patent application EP 1 003 616B1 by the applicant.This apparatus and method for example are used to make the parts of shaft type to form profile of tooth: through said known devices and said known method, can form outer toothed portion for solid axle, also can form internal tooth portion and both can form outer toothed portion for the axle of tubular type.The device of in above-mentioned file, explaining has such advantage with corresponding method, that is, reduce extruding force the highest by about 50% through warbled feeding with respect to traditional axle shaping or mobile can the realization.
But also such basic problem can appear in known devices and known method; Promptly; Section start in structure to be made (tooth portion), form one always be slightly less than the zone after direction of feed is positioned at this initiation region of workpiece tip circle and/or the diameter of shaping.This is that flow behavior by material to be formed causes and particularly this can play unfavorable effect for the member with narrow especially margin of tolerance.On the member of shaft type or during middle formation structure, another problem is so-called shock wave (Bugwelle), and particularly when said structure ended at a undercutting (Freistich), said shock wave appeared at the termination place of structure after being shaped.
Start described known devices and said method also has such shortcoming, that is, forming tool only has not enough service life usually.This causes like this; That is, in known devices and in known method, in whole forming process; Promptly in each single forming step; Carry out that is to say always have identical size respectively with each stroke distance along Return-ing direction along each stroke distance of direction of advance through keeping identical forward stroke and keeping identical backstroke.This can cause, and forming tool always engages with workpiece effect to be processed with identical zone.
Summary of the invention
The objective of the invention is, improve the apparatus and method of the said type of beginning like this, so that realize improvement the service life of forming results and/or forming tool.
Said purpose realizes through device according to the present invention like this; Promptly; Said frequency generator is regulated feed arrangement like this; That is each forward stroke of the forming step that, makes at least two of said device that carry out in order, is made up of a forward stroke and a backstroke respectively and/or each stroke distance of each backstroke are different.
Imagine according to the method for the invention; Like this feed arrangement is regulated through said frequency generator; That is, each forward stroke of at least two front and back forming step that carry out in order, that be made up of a forward stroke and a backstroke respectively and/or each stroke distance of each backstroke are different.
Now; Make on the one hand according to measure of the present invention; Can realize the raising in the service life of forming tool: the different stroke distance of each single forming step of carrying out in order makes, the power effect in each forming step on shaped region all is different from the power effect in (one) forming step of front respectively.This can cause; Corresponding tools section can be as not being loaded in known devices and the method continuously, but corresponding load working condition (pressure loading, drag load and bending load and denude load) is assigned on the different zone of forming tool.Advantageously realize higher service life thus.On the other hand, through measure according to the present invention each forming step is complementary to condition of different (situationsadequat) and corresponding processing request, thereby can realizes improved crudy.
Favourable improvement project imagination of the present invention, the forming step of carrying out in the inside of a shaping length that confirm, that forming tool passes through when workpiece is formed have the stroke distance of discontinuous, the disorder distribution of each single forming step.This measure has such advantage, that is, be improved significantly the service life of forming tool thus; Because in each forming step; Power effect on the shaped region of forming tool all with the forming step of front in slightly different, thereby the load working condition of the forming tool that when workpiece is formed, occurs is disorder distribution equally, consequently; Not always identical shaped region to be loaded, but the different shaped region of forming tool is loaded.
Another favourable improvement project imagination of the present invention; Frequency generator is regulated said feed arrangement like this; That is, forming tool is divided at least two shaped regions with stroke distance of forward stroke different, each single forming step and/or backstroke along its axial direction shaping distance of passing through of advancing when processing work.This measure makes that advantageously each single forming step can be suitable with molding condition that occur, special in the shaped region of confirming; That is to say; Come to confirm the stroke distance of a definite sequence of forming step like this; That is, make and in the shaped region that confirms, realize best as far as possible processing result.
Other favourable form of implementation of the present invention is the content of dependent claims.
Description of drawings
Other details of the present invention can be by obtaining among the several embodiment with reference to description of drawings below.Among the figure:
Fig. 1 illustrate one the device first embodiment and
Fig. 2 illustrates second embodiment of a device.
The specific embodiment
Shown in Fig. 1, be used for to a workpiece 2 form, particularly cold forming, particularly first embodiment of the device 1 of cold flow extruding has a forming tool 3 here, this forming tool shown in situation under be designed to a shaping die.Said forming tool 3 can be through a feed arrangement 5 with respect to workpiece 2 motions.In other words, this feed arrangement produces a forming tool 3 and is clamped in the relative motion between the workpiece 2 in the clamping unit 7.If forming tool 3 moves along the workpiece 2 that its direction of feed P situation upper/lower positions shown in here clamps regularly through feed arrangement 5, then workpiece 2 gets into forming tools 3 and by itself known mode and method shaping.
In device 1, imagine now; The frequency generator 10 that acts on the feed arrangement 5 that moves through that distributes along direction of feed P changes like this; That is, make forming tool 3 implement moving of one-stroke formula, in this motion, set along direction of feed P; After a forming tool 3 travels forward the forward stroke of one first stroke distance therein, in the backstroke after the forward stroke and then, forming tool 3 is retracted one second stroke distance through feed arrangement 5.In another first stroke distance of forming step after the described in front forming step, forming tool 3 travels forward once more, and is moved beyond the terminal point of forward stroke of the forming step of one of front.Loading through carrying out this impact type by 3 pairs of workpiece of forming tool 2 can advantageously realize, forming tool 3 had before it arrives on the zone that should in next forming step, process of workpiece 2 than high kinetic energy under the situation of loading force continuously.This device is known also here needn't the specifying of patent EP 1 003 616B1 by the applicant.
Can be for other structure structure of device 1 and its operation principle with reference to foregoing european patent document and the content that the disclosure of this document is combined into the application of quoting through here.
Set now in the described here device 1, each forward stroke of each single forming step and/or the stroke distance of each backhaul are different each other.This be with by the important difference of the known foregoing device of EP 1 003 616B1 with corresponding method; Set in described in front known devices and the method, each forward stroke of each single forming step has identical stroke distance respectively with each backstroke.Such processing mode is obviously favourable on the service life of crudy and/or forming tool 3 now.
Set according to preferred first form of implementation, each forward stroke of each single forming step and/or the stroke distance of each backhaul have discontinuous, unordered distribution.Here preferably, frequency generator has a so-called fuzzy logic 11, is used for confirming corresponding each forward stroke and/or each backhaul of each single forming step.
This measure has such advantage; Promptly can obviously improve the service life of forming tool 3 thus; Because; In each forming step, the power effect on each shaped region of forming tool 3 all is different from previous forming step slightly: because discontinuous, the unordered sequence of the stroke distance of each forward stroke of each single forming step and/or each backhaul, the load working condition of the forming tool 3 that when workpiece 2 is shaped, occurs (particularly pressure loading, drag load and bending load and abrasion load) also distributes disorderly; Thus, the load of each single shaped region of forming tool 3 also distributes disorderly.
Each forward stroke and/or each backhaul that it is therefore preferable that 11 pairs of each single forming step of fuzzy logic of frequency generator 10 are programmed like this,, on the shaping length of extending vertically of workpiece 2, do not have identical stroke distance basically that is.This measure has such advantage, that is, can realize thus load force is distributed on the forming tool 3.
Foregoing measure also is suitable for being used for workpiece 2 is removed from forming tool 3.To those skilled in the art, the processing mode that carry out this moment can so easily obtain, and, is interpreted as " direction of advance " on the meaning of explaining the front through the direct of travel that returns with forming tool 3 that is.
Preferred second form of implementation according to device 1 the foregoing principle of work and power is set; Come like this feed arrangement 5 is carried out frequency adjustment; Promptly; Along its axial direction the advance shaping distance of process be divided at least two shaped regions man-hour by forming tool 3 in that workpiece 2 is added, and in the inside of said each single shaped region, come to confirm each forward stroke of the forming step that is associated with corresponding shaped region and/or the stroke distance of each backstroke like this; Promptly; Can realize the improved forming characteristic of forming tool 3: in order to eliminate the described problem in the tip circle of making tooth portion of beginning, set when in this shaped region, workpiece 2 being shaped, realize frequency adjustment like this to feed arrangement 5 through frequency generator 10; That is, prevent consciously or reduce this good material stream at least as hope for a shaping.For outer toothed portion and internal tooth portion, this all can cause tip circle to be filled preferably.Even when drawing in, the departing from of diameter that also can prevent or reduce at least workpiece 2 to be formed thus is absorbed in (wegtauchen).
After the shaping of first shaped region, in second shaped region of this moment one is connected first shaped region after, as noted earlier, preferably once more with the adjusting work discontinuous, unordered to forming tool 3.
Certain this measure is not limited only to two shaped regions.Any a plurality of shaped region can be set in principle, so that each forward stroke of each forming step that is associated with the shaped region of confirming and/or the length of each backstroke are complementary with processing result that occurs this moment and/or the processing result that should realize in light of the circumstances.For example; At the destination county of the shaping distance passed through of advancing by forming tool 3, for fear of or reduce beginning said " shock wave ", can regulate said feed arrangement 5 like this through frequency generator 10; Promptly; Make forming tool 3 in corresponding forming step along direction of advance only through a very little stroke distance, and on Return-ing direction through a littler stroke distance, thereby can avoid or reduce the shifting out of end regions that material is crossed tooth portion at least.
Basically the device 1 with first embodiment is identical at the embodiment of the device 1 ' shown in Fig. 2, and therefore identical parts can be provided with identical Reference numeral and needn't be elaborated again.A main difference between these two embodiment is that in device 1 ', forming tool 3 fixed-site ground is provided with, and workpiece 2 is can be axially movable with respect to forming tool 3.Therefore feed arrangement 5 and act on workpiece 2 with the frequency generator 10 of its collaborative work or act on the clamping unit 7 of clamping work pieces 2.
Can certainly adopt the combination between foregoing two embodiment, that is to say, both make forming tool 3 also make workpiece 2 motions by the feed arrangement 5 that is used to produce the relative motion between workpiece 2 and the forming tool 3.
Claims (10)
1. one kind is used for device (1) that a workpiece (2) is shaped; This device has a forming tool (3) and a feed arrangement (5); Can produce the relative motion between workpiece (2) and the forming tool (3) through said feed arrangement; Wherein this device (1) have one with the coefficient frequency generator of feed arrangement (5) (10), can regulate like this relative motion between workpiece (2) and forming tool (3) that produces by feed arrangement (5) through said frequency generator, promptly; After a forward stroke; In the backstroke that follows after forward stroke, can realize that forming tool (3) and/or workpiece (2) pass through the motion of one second stroke distance along a direction opposite with direction of feed (P), wherein workpiece (2) and/or forming tool (3) carry out through one first stroke distance along direction of feed (P) in said forward stroke; It is characterized in that; Said frequency generator (10) is designed so that it and like this feed arrangement (5) regulated, that is each forward stroke of the forming step of, make that at least two of said device (1) are that carry out in order, being made up of respectively a forward stroke and a backstroke and/or the stroke distance of each backstroke are different.
2. device according to claim 1 is characterized in that, said frequency generator (10) has a fuzzy logic (11).
3. according to each described device in the aforementioned claim; It is characterized in that, one that confirm, by forming tool (3) discontinuous, the unordered distribution that each forming step that the shaping length inside passed through carries out has the stroke distance of each single forming step of when workpiece (2) is shaped, waiting to advance.
4. device according to claim 1 and 2; It is characterized in that; Regulate said feed arrangement (5) like this by frequency generator (10); That is, forming tool (3) is divided at least two shaped regions along the axial direction of the processing work shaping length of passing through of advancing when processing work (2), and said shaped region has the stroke distance of forward stroke different, each single forming step and/or backstroke.
5. device according to claim 1 is characterized in that said shaping is cold deformation.
6. device according to claim 1 is characterized in that said shaping is a cold impact extrusion.
7. one kind is used for method that a workpiece (2) is shaped; It is characterized in that; Produce the relative motion between a workpiece (2) and the forming tool (3) through a feed arrangement (5); Wherein the relative motion between workpiece (2) and forming tool (3) that is produced by feed arrangement (5) is regulated like this, that is, at a workpiece (2) and/or forming tool (3) therein after direction of feed (P) is carried out the forward stroke through one first stroke distance; In the backstroke that follows after forward stroke; Make forming tool (3) and/or workpiece (2) move through one second stroke distance with the opposite direction of direction of feed (P), wherein, regulate like this through a frequency generator (10) along one; That is, make that each forward stroke of at least two forming step that carry out in order, that be made up of a forward stroke and a backstroke respectively and/or the stroke distance of each backstroke are different.
8. method according to claim 7 is characterized in that, said frequency generator (10) uses a fuzzy logic.
9. according to claim 7 or 8 described methods, it is characterized in that, produce the sequence of discontinuous, a unordered forming step by frequency generator (10).
10. according to claim 7 or 8 described methods; It is characterized in that; Regulate said feed arrangement (5) like this by frequency generator (10); That is, forming tool (3) is divided at least two shaped regions along its axial direction shaping distance of passing through of advancing when processing work (2), and said shaped region has the stroke distance of forward stroke different, each single forming step and/or backstroke.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200610037091 DE102006037091B3 (en) | 2006-08-07 | 2006-08-07 | Device for cold deforming a workpiece comprises a frequency-producing unit for modulating an advancing unit so that the lifting paths of a forward lift and/or rearward lift of two subsequent deforming steps of the device are different |
| DE200620012170 DE202006012170U1 (en) | 2006-08-07 | 2006-08-07 | Cold extrusion press has advance and return repeat sequence progressively modified by fuzzy logic circuit |
| DE102006037091.0 | 2006-08-07 | ||
| DE202006012170.6 | 2006-08-07 | ||
| PCT/EP2007/006174 WO2008017358A1 (en) | 2006-08-07 | 2007-07-12 | Device and method for forming a workpiece |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101500722A CN101500722A (en) | 2009-08-05 |
| CN101500722B true CN101500722B (en) | 2012-04-18 |
Family
ID=38438650
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007800294003A Active CN101500722B (en) | 2006-08-07 | 2007-07-12 | Device and method for forming a workpiece |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101500722B (en) |
| DE (1) | DE102006037091B3 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3360622B1 (en) * | 2017-02-13 | 2020-11-04 | FELSS Systems GmbH | Method of manufacturing and forming machine for forming in particular metallic workpieces by extrusion |
| EP4289526A1 (en) | 2022-06-09 | 2023-12-13 | FELSS Systems GmbH | Forming method and forming machine for producing helical gearing of a cylindrical workpiece by extrusion |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101763A (en) * | 1985-04-01 | 1987-01-31 | 株式会社神户製钢所 | Indirect extrusion press |
| DE10027703A1 (en) * | 2000-06-03 | 2001-12-13 | Sms Demag Ag | Process for hot and cold deformation, especially extrusion of a metallic workpiece uses a matrix excited using an oscillating device relative to the workpiece |
| WO2006024505A1 (en) * | 2004-09-02 | 2006-03-09 | Felss Gmbh | Method and device for correcting the bevel error of a polygonal profile, in particular a gear tooth alignment error |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0036316B1 (en) * | 1980-03-17 | 1986-03-05 | Nippon Paint Co., Ltd. | Lithographic printing plate |
-
2006
- 2006-08-07 DE DE200610037091 patent/DE102006037091B3/en not_active Expired - Fee Related
-
2007
- 2007-07-12 CN CN2007800294003A patent/CN101500722B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85101763A (en) * | 1985-04-01 | 1987-01-31 | 株式会社神户製钢所 | Indirect extrusion press |
| DE10027703A1 (en) * | 2000-06-03 | 2001-12-13 | Sms Demag Ag | Process for hot and cold deformation, especially extrusion of a metallic workpiece uses a matrix excited using an oscillating device relative to the workpiece |
| WO2006024505A1 (en) * | 2004-09-02 | 2006-03-09 | Felss Gmbh | Method and device for correcting the bevel error of a polygonal profile, in particular a gear tooth alignment error |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102006037091B3 (en) | 2007-09-27 |
| CN101500722A (en) | 2009-08-05 |
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