EP1017519A1 - Feed mechanism for a forming device, especially a cold forming device such as a rotary swaging device - Google Patents
Feed mechanism for a forming device, especially a cold forming device such as a rotary swaging deviceInfo
- Publication number
- EP1017519A1 EP1017519A1 EP98958222A EP98958222A EP1017519A1 EP 1017519 A1 EP1017519 A1 EP 1017519A1 EP 98958222 A EP98958222 A EP 98958222A EP 98958222 A EP98958222 A EP 98958222A EP 1017519 A1 EP1017519 A1 EP 1017519A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- feed
- tool segments
- workpiece
- tool
- sensor unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000011156 evaluation Methods 0.000 claims description 9
- 238000004898 kneading Methods 0.000 claims description 4
- 230000001419 dependent effect Effects 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 description 6
- 238000001514 detection method Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/08—Accessories for handling work or tools
- B21J13/10—Manipulators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J7/00—Hammers; Forging machines with hammers or die jaws acting by impact
- B21J7/02—Special design or construction
- B21J7/14—Forging machines working with several hammers
- B21J7/145—Forging machines working with several hammers the hammers being driven by a rotating annular driving member
Definitions
- Feed device for a forming device in particular a cold forming device such as a rotary kneading device
- the invention relates to a feed device for a forming device, in particular a cold forming device such as a circular kneading device, through which a workpiece to be machined can be moved by a reducing device, the reducing device having tool segments acting on the workpiece, which are periodically closed by an operating frequency at an operating frequency -Position in which the tool segments are in operative engagement with the workpiece to be machined, can be moved into an open position, as well as such a reshaping device and a method for feeding a workpiece through a reshaping device.
- a feed device is known. It is provided here that the feed device introduces the workpiece into the reducing device and at the same time generates the rotary movement of the workpiece.
- a clamping device of the feed device holds the workpiece in order to relativize its rotation against the tool friction.
- a disadvantage of the known feed device is that the workpiece is fed continuously. This results in a disadvantageous manner a high load and thus a high wear of the tool segments of the reducing device, since in the case of closed tool segments the feed movement generated by the known feed device must be compensated for by the tool segments and / or a frame of the cold forming device carrying the reducing device.
- This clamping of the workpiece, which counteracts the feed movement of the workpiece, through the tool segments of the reducing device not only stresses the tool segments unnecessarily and is therefore subjected to undesirable wear. Rather, the workpiece is also loaded in a disadvantageous manner, which can lead to buckling or warping or increased twisting of the workpiece.
- a device for reducing the thickness of a plate which has a feed line for the forward movement of the plate and a pair of pressing tools which are arranged on opposite sides of the plate.
- One of the pressure surfaces of the two pressing tools has a surface parallel to the plate, which runs essentially parallel to the feed line.
- the other printing surface has an inclined surface, which includes a predetermined angle with the feed line.
- the pressing tool with the inclined surface is driven vibratingly, while the plate is continuously moved forward.
- the object of the invention is to develop a feed device of the type mentioned at the outset in such a way that a feed rate which is adapted to the working frequency of the tool segments of the reducing device is achieved.
- such a forming device and a method for feeding a workpiece through a forming device are to be created, in which a feed frequency-adapted feed is ensured.
- a sensor unit is provided by which the position of the tool segments of the reducing device can be detected, that the sensor unit generates a sensor signal that characterizes the position of the tool segments and that can be conducted to an evaluation unit, that the evaluation unit is dependent generates a control signal controlling the feed device from the sensor signal supplied to it, the feed device being controllable by the control signal in such a way that a minimum feed can be generated when the tool segments are closed and a maximum feed can be generated when the tool segments are open.
- the measures according to the invention advantageously achieve a feed of the workpiece which is matched to the working frequency of the tool segments of the reducing device and which is not only reflected in a reduced load on the tool segments and / or the workpiece, but also an overall faster feed speed and thus accelerating the forming process.
- the power of the feed unit according to the invention which generates the feed movement is reduced, while the tool segments of the reducing device are in their closed position which acts on the workpiece.
- the feed of the workpiece to be machined is increased by the feed device according to the invention, whereby an optimal insertion path is achieved with a maximum working stroke of the tool segments.
- the feed segments according to the invention advantageously no longer have to compensate for the feed movement of the workpiece when the tool elements are closed, their wear is drastically reduced and the total load on the forming device according to the invention is reduced.
- an excessive axial and / or torsional load on the workpiece to be machined is advantageously avoided during the closing process of the tool segments.
- FIG. 1 shows an exemplary embodiment of a feed device together with a reducing device of a cold forming device
- FIG. 2 shows a schematic view of the reducing device from the direction II of FIG. 1,
- FIG. 3 shows a schematic view of the reducing device from the direction III of FIG. 1,
- Figure 4 shows another embodiment of a feed device.
- the reducing head 21 has a number - four in the exemplary embodiment shown here - of tool segments 22a-22d which periodically apply force to the workpiece 2 in order to achieve the desired shaping by the tool segments 22a 22d are moved at their operating frequency from their closed position shown in FIG. 2, in which they are in active engagement with the workpiece 2, into an open position, shown in FIG. 3, in which the active engagement of the tool segments 22a-22d with the workpiece 2 is canceled and the workpiece 2 is pushed further by the feed device 10.
- the feed of the workpiece 2 in contrast to the known devices in which a continuous feed movement of the workpiece 2 during forming, in particular during cold forming; is provided - it can be specified in such a way that with tool segments 22a-22d that are in active engagement with workpiece 2, a minimal or no feed movement and with open tool segments 22a-22d that are not in active engagement with workpiece 2, a maximum feed movement can be achieved.
- This is achieved in an advantageous manner in that, on the one hand, the position of the tool segments 22a-22d is monitored by a suitably selected sensor unit 30 (see FIGS.
- the evaluation unit 40 generates a control signal V which controls the feed element 11 of the feed device 10 as a function of the sensor signal S supplied to it.
- the feed element 11 In the closed position, the feed element 11 generates a minimum feed of the workpiece 2, which is preferably zero, while when the tool segments 22a-22d are not in active engagement with the workpiece 2, that is to say generally in their open position, a maximum feed of the workpiece 2 is effected.
- This has the effect that, in the described shaping device 1, the feed speed or energy can be greater when the tool segments 22a-22d are open than when the tool segments 22a-22d are closed, since the wear-generating large feed energy is not effective when the tool segments 22a-22d are closed is.
- the effective position of the tool segments can be monitored directly or indirectly by the sensor unit 30, with the displacement movement of the tool segments 22a-22d, i.e. the deflection of which is detected from its rest position or working position, for example by a piezo force measuring ring or a force measuring wedge.
- FIGS. 2 and 3 Such an indirect detection is shown in FIGS. 2 and 3, in which a view of the reducing head 21 in the feed direction of the workpiece 2 is shown.
- This reducing head 21 has, in a manner known per se, a roller cage 21a in which a multiplicity of rollers 23 are arranged, and a tool guide 21b in which the tool segments 22a-22d are displaceably guided in the radial direction.
- the sensor unit 30 is arranged on the tool guide 21b which also rotates with the tool segments 22a-22d, by means of which it can be ascertained whether or not there is a roller 23 in its detection area, because of the defined spatial relationship between the sensor unit 30 and the tool segments 22a-22d are calculated by the evaluation unit 40 whether the tool segments 22a-22d are currently in their active position or not, and the feed of the workpiece 2 can then be controlled accordingly.
- FIG. 4 shows a further exemplary embodiment of a feed device together with a reducing device of a cold forming device, which essentially corresponds to the first exemplary embodiment of FIG. 1, so that corresponding parts are provided with the same reference numerals and are no longer described in more detail.
- Second exemplary embodiment proposes that the feed device 10 has, in addition to the feed element 11, a slide 12 which can be displaced in and / or counter to the feed device of the workpiece 2 and carries the feed element 11, so that the feed frequency-adjusted feed of the workpiece 2 by a cooperation of the feed belements 11 and the carriage 12 can be generated.
- the feed element 11 and thus the workpiece 2 is moved continuously in the direction of the tool segments 22a-22d at a speed v 1 , while the carriage 12 moves at a speed v 2 towards the tool segments 22a-22d or moved away that the feed movement of the workpiece 2 to be achieved, which is adapted to the working frequency, is formed.
- the maximum feed speed v m of the workpiece 2 in the direction of the tool segments 22a-22d which can be achieved during the open position of the tool segments 22a-22d, is achieved in that the feed element 11 moves the workpiece 2 at the speed v v which is 50% of the maximum feed speed v m , and that at the same time the carriage 12 moves at a speed of v 2 , which in turn is 50% of the maximum feed speed v m , in the direction of the tool segments 22a-22d, so that the superimposition of these two speeds v 1 + v 2 of 50% of the maximum feed speeds v m results in this.
- the reducing device 20 is arranged on a further slide 13 which is functionally assigned to the feed device 10.
- the slide 12 If the slide 12 is dispensed with, the slide 13 takes over the function of the slide 12 and, in cooperation with the feed element 11, which feeds the workpiece 2 essentially continuously, generates the feed rate adapted to the working frequency. If both the carriage 12 and the carriage 13 are used in the second exemplary embodiment, the relative movement of the two carriages 12, 13 becomes such in relation to one another coordinated that in connection with the feed movement of the feed element 11, the feed rate to be adjusted to the working frequency is obtained.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Automatic Control Of Machine Tools (AREA)
- Press Drives And Press Lines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19742819 | 1997-09-27 | ||
DE1997142819 DE19742819C2 (en) | 1997-09-27 | 1997-09-27 | Feed device for a forming device, in particular a cold forming device such as a rotary kneading device |
PCT/EP1998/006121 WO1999016563A1 (en) | 1997-09-27 | 1998-09-26 | Feed mechanism for a forming device, especially a cold forming device such as a rotary swaging device |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1017519A1 true EP1017519A1 (en) | 2000-07-12 |
EP1017519B1 EP1017519B1 (en) | 2002-05-08 |
Family
ID=7843901
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98958222A Expired - Lifetime EP1017519B1 (en) | 1997-09-27 | 1998-09-26 | Feed mechanism for a forming device, especially a cold forming device such as a rotary swaging device |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1017519B1 (en) |
DE (1) | DE19742819C2 (en) |
ES (1) | ES2177096T3 (en) |
WO (1) | WO1999016563A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112642980A (en) * | 2020-12-28 | 2021-04-13 | 柳州市荆大汽车制动管制造有限公司 | Full-automatic cold heading machine |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102413959B (en) * | 2009-03-18 | 2014-03-12 | 费尔斯有限公司 | Forming tool, in particular kneading tool |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2966139A (en) * | 1959-03-09 | 1960-12-27 | Appel Process Ltd | Hydraulic feed means |
US3447349A (en) * | 1965-08-02 | 1969-06-03 | Paul Lippke | Method of and system for operating a high-speed forging press |
GB1317302A (en) * | 1970-09-03 | 1973-05-16 | Davy & United Eng Co Ltd | Forging control |
DE3376530D1 (en) * | 1982-12-01 | 1988-06-16 | Hitachi Ltd | Press apparatus for reducing slab width |
DE29717173U1 (en) * | 1997-09-27 | 1998-02-19 | Felss Geb | Feed device for a forming device, in particular a cold forming device such as a rotary kneading device |
-
1997
- 1997-09-27 DE DE1997142819 patent/DE19742819C2/en not_active Expired - Fee Related
-
1998
- 1998-09-26 WO PCT/EP1998/006121 patent/WO1999016563A1/en active IP Right Grant
- 1998-09-26 ES ES98958222T patent/ES2177096T3/en not_active Expired - Lifetime
- 1998-09-26 EP EP98958222A patent/EP1017519B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9916563A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112642980A (en) * | 2020-12-28 | 2021-04-13 | 柳州市荆大汽车制动管制造有限公司 | Full-automatic cold heading machine |
CN112642980B (en) * | 2020-12-28 | 2022-07-05 | 柳州市荆大汽车制动管制造有限公司 | Full-automatic cold heading machine |
Also Published As
Publication number | Publication date |
---|---|
WO1999016563A1 (en) | 1999-04-08 |
ES2177096T3 (en) | 2002-12-01 |
EP1017519B1 (en) | 2002-05-08 |
DE19742819C2 (en) | 1999-08-19 |
DE19742819A1 (en) | 1999-04-15 |
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