EP1781442A1 - Thread and gear milling machine - Google Patents
Thread and gear milling machineInfo
- Publication number
- EP1781442A1 EP1781442A1 EP05772012A EP05772012A EP1781442A1 EP 1781442 A1 EP1781442 A1 EP 1781442A1 EP 05772012 A EP05772012 A EP 05772012A EP 05772012 A EP05772012 A EP 05772012A EP 1781442 A1 EP1781442 A1 EP 1781442A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- axis
- workpiece
- machine according
- thread
- wälzf
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F5/00—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made
- B23F5/20—Making straight gear teeth involving moving a tool relatively to a workpiece with a rolling-off or an enveloping motion with respect to the gear teeth to be made by milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C3/00—Milling particular work; Special milling operations; Machines therefor
- B23C3/28—Grooving workpieces
- B23C3/32—Milling helical grooves, e.g. in making twist-drills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23F—MAKING GEARS OR TOOTHED RACKS
- B23F17/00—Special methods or machines for making gear teeth, not covered by the preceding groups
- B23F17/006—Special methods or machines for making gear teeth, not covered by the preceding groups using different machines or machining operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/32—Thread cutting; Automatic machines specially designed therefor by milling
Definitions
- the present invention relates to a combined threading and Wälzf milling machine according to the independent claim.
- FIG. 6 An example of a piece processed in this way is shown in FIG.
- the illustrated machined metal piece 6 ' has a thread 65 and a straight toothing 66.
- Such pieces are often used, for example, in the automotive, engineering and watch industry.
- Such pieces are usually milled with two different gear cutting machines, namely with a Gewindef räser to mill the threads 65, and with a hob to the straight ⁇ . ". 15 gearing 66 at another time to räsen. Thread millers are rotated about an axis approximately parallel to the workpiece, while hobs often rotate about an axis approximately orthogonal to the workpiece.
- Screws are milled much like threads; in order to avoid unnecessary repetition, in this description and in the 20 claims, the words Gewindef räser or thread used as a generic term, which also include Schneckenf räser or snails or similar toothed pieces.
- Gewindef räser or thread used as a generic term, which also include Schneckenf räser or snails or similar toothed pieces.
- bevel gears can be machined with Wälzf räser in the context of the invention.
- DE-C1-44 27 010 discloses a machine for processing the
- US-A-2004/040133 discloses a machine for making threads in which a turret is equipped.
- the turret has various tools that are equipped with different drives.
- DE-A1-41 12763 discloses an apparatus for processing the surface of a gravure cylinder. To edit the Oberf surface are arranged in the manner of a revolver, equipped with its own drive tools.
- the rexibility should be increased and the number of cutter changes should be reduced.
- the space requirement and the price of the machine should also be reduced, for example by reducing the number of drive motors.
- the machine should preferably be CNC-controllable.
- the advantage of the present invention is that the threads and gears on a workpiece can be milled with a single machine. In doing so, the workpiece does not have to be unloaded or reloaded between both operations; In a preferred embodiment, the workpiece is not even relocated between the two milling operations.
- the module can assume a plurality of named second processing positions, which are achieved from the named first processing position by swiveling between -140 ° and + 40 °. Thanks to the freedom of movement of the milling cutter, the entire length of the workpiece can be machined. This has the advantage that the entire length of the workpiece is machinable by both milling cutters without the drive motor of the workpiece and the drive motor of the milling cutter colliding with each other.
- Another advantage is that the number of components, especially expensive or bulky components, can remain low.
- FIG. 1 is a schematic representation of a machine tool in a perspective view from the front, the machine being in the second position for machining the workpiece with the hob, FIG.
- FIG. 2 is a plan view of the workpiece and the tools of the machine in the designated second position.
- Rg. 3 is a plan view of the workpiece and the tools of the machine in the first position for processing 'of the workpiece with the Gewindef Raeser.
- FIG. 4 is a side view of the workpiece and the tools of the machine in the designated second position.
- Rg. 5 is a front view of a machined workpiece.
- the Rg. 6A bis ⁇ l show the various possible processing positions.
- the machine tool 1 is a thread and hobbing machine with a short thread milling cutter 2, which is a motor 50 is rotatably driven about a first axis of rotation X1, and with a longer Wälzf räser 3, which is rotatably driven by the same motor 50 about a second axis of rotation Y1.
- the Gewindef räser could be equivalently replaced by a son corner cutter in the context of Bfindung.
- the Wälzf räser could be replaced by another cutter, which is rotated about the first axis Y1 during a milling operation.
- threads (or screws) 65 can be reamed in a continuous milling operation to a first part of the workpiece 6, while vertical, oblique or tapered teeth 66 are cut to a second part of the workpiece from the Wälzf mill in a separate incremental milling operation can be rast.
- the workpiece 6 received by a spindle 61 is rotationally driven about a horizontal axis X by a workpiece motor 60 during the continuous milling operation.
- the Gewindef räser 2 and the Wälzf räser 3 are mounted with the motor 50 on a common support module 5 which is pivotable about the axis Z between a plurality of processing positions.
- the axis Z is horizontal and orthogonal to the axis X.
- the first processing position A is shown in FIG. 3 while a second one is shown
- Processing position B on the figures 1, 2 and 4 is shown. Other possible processing positions and shown in Figures 6A to 6l.
- the axis X1 of the thread milling cutter 2 is located in front of the axis Y1 of the hob 3, as can be seen in FIG. 2; the two axes X1 and Y1 are thus in a fixed position to each other, parallel and only along the directions Z and Y shifted.
- the axis X1 is preferably in the illustrated range ⁇ of + or -45 ° in front of the axis Y1. It is also possible that the position of the axis X1 relative to the axis Y1 can be changed; However, this would require a more complex coupling to the engine 50.
- the workpiece motor 60 is mounted on guides 53 on an inclined surface 10, as can be seen in particular in FIG. This has the advantage, inter alia, that the base of the workpiece motor 60 does not strike the lower end of the thread milling cutter 2 or other parts on the module ⁇ when the end of the workpiece is being machined. In this case, the processing space remains easily accessible, as if the Baäsdes motor 60 would be mounted approximately vertically.
- the workpiece 6 can be machined by the thread mill 2 in order, for example, to mill an external thread.
- the module 5 is rotated about the axis Z relative to the machine bed such that the axis of rotation X1 of the thread cutter forms an angle to the axis X of the workpiece ⁇ .
- the Gewindef cutter 2 is driven in this position, for example via a wheel gear or belt drive from the drive motor 50.
- the hob 3 remains unused in this first position and can also be decoupled from the drive motor.
- the motor 60, the spindle 61 and the anvil can move linearly with the workpiece 6 along guides 53 relative to the module 5 during the milling operation in the direction X. It is also conceivable a linear displacement of the workpiece spindle 61 and the workpiece during milling.
- the motor 50 which drives both the Gewindef räser 2 as well as the hob 3 is mounted coaxially with the axis Y1 of the Wälzfräsers3 in this particular embodiment.
- the axis X1 of the thread milling cutter is always parallel to the axis Y1 in this variant; a non-parallel fixed arrangement of both axes is also possible.
- the second axis Y1 and the motor 50 are thus in this first processing position in the Fastening Z separated by the Gewindef räser 2.
- the first motor 50 and the workpiece motor 60 are disposed at opposite ends of the workpiece ⁇ so that they do not butt each other and that the entire length of the workpiece 6 can be machined by the thread mill 2.
- the workpiece 6 can be machined by Wälzf mill 3, for example, Zahnr lancets on a part of the workpiece to edit.
- This second position is achieved from the first described machining position by the module 5 about the axis Z by an angle ⁇ , in the example shown by 90 °, pivoted so that the axis of rotation Y1 of the hob 3 forms an angle ⁇ to the axis X of the workpiece 6 ,
- the angle ⁇ can be chosen freely in a range between -140 ° and + 40 °; Thanks to thistheresf purity, the entire length of the workpiece can be gef r adj without dasdabei the Wälzersfräser 3 or the tool motor 50 abuts against the workpiece motor.
- the axis Y1 is perpendicular in the second machining position and the angle ⁇ is 90 °.
- the Wälzersfräser 3 is driven in this position directly or preferably via a wheel gear from the coaxial drive motor 50.
- the Gewindef cutter 2 remains unused in this second position and can also be decoupled from the drive motor.
- the workpiece 6 can move linearly in the direction X along guides 53 relative to the module 5 during the milling operation. Also conceivable is a linear displacement of the workpiece spindle 61 and of the workpiece during milling.
- the module 5 with the motor 50 and the two cutters may be displaced along guides 52 in the direction Z in order to approach the rolling element 3 to the workpiece.
- the module 5 is also displaced along vertical guides 54 in the direction Y, as can be seen for example in Figure 1, so that the thread mill 3 do not bump against the workpiece 6.
- two linear and one rotational movement of the module 6 relative to the workpiece 6 are usually required.
- FIGS. 6C to 6E show three possible processing positions with a son corner cutter 2.
- the position of FIG. 6C is horizontal and corresponds to FIG. 3.
- the module 5 with the corner cutter 2 is -40 °, while it is pivoted on the figure 6E + 35 °.
- the toothing machine according to the invention can also be used with a hob on the axis X1 instead of
- Gewindef räsers as can be seen in the examples of Figures 6Fbis6l. This makes it possible to use a roughing milling with an angle a between the workpiece axis X and the Wälzf räserachse X1 of -40 °, -25 °, + 40 ° or + 24 °.
- the tool motor 50, the workpiece motor 60 and preferably also motors for linear displacement of the tools and / or the workpiece 6 along the various guides are preferably controlled by a program in a CNC unit.
- the CNC unit preferably operates the rotary drives and the linear drives synchronously, preferably at programmable speed and speed ratios, in order to be able to machine different types of gears and / or threads with the same machine.
- the present invention is suitable in particular, but not exclusively, for machining threads and gears up to module 2.5.
- axes of rotation X and Y1 are always in a vertical plane (neglecting the small horizontal distance along Z).
- the tool motor 50 is thus preferably never in a horizontal position orthogonal to the workpiece motor 60, so that the depth of the machine 1 and the accessibility are improved.
- the workpiece 6 can be loaded and unloaded either in the first or in the second processing position.
- the machine can also be combined with an automatic loading and unloading device.
- the machine includes two spindles on the same X-guide 53 to receive two workpieces.
- the two spindles are preferably driven sequentially by two independent workpiece motors; However, the two workpieces are processed at different times with the same tools 2, 3.
- This variant allows the loading or unloading of a first workpiece during the processing of the other workpiece, and an exchange of the machined workpiece by simultaneous displacement of both workpieces.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Gear Processing (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH12542004 | 2004-07-26 | ||
PCT/EP2005/053349 WO2006010708A1 (en) | 2004-07-26 | 2005-07-13 | Thread and gear milling machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1781442A1 true EP1781442A1 (en) | 2007-05-09 |
Family
ID=34973145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05772012A Withdrawn EP1781442A1 (en) | 2004-07-26 | 2005-07-13 | Thread and gear milling machine |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1781442A1 (en) |
WO (1) | WO2006010708A1 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103008742A (en) * | 2012-12-12 | 2013-04-03 | 江南大学 | Numerical control screw milling machine |
CN106181438B (en) * | 2016-08-31 | 2019-03-08 | 山东弘祥机床股份有限公司 | A kind of rear axle machining tool |
CN114951828A (en) * | 2022-05-23 | 2022-08-30 | 长江大学 | Integrated hob, hobbing device and method for machining screw drill rotor |
EP4389333A1 (en) * | 2022-12-22 | 2024-06-26 | M Services S.r.l. | Gear cutting machine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1641666A (en) * | 1924-02-25 | 1927-09-06 | Barber Colman Co | Gear-roughing machine |
US1905310A (en) * | 1928-05-09 | 1933-04-25 | Barber Colman Co | Method of and machine for hobbing gears and the like |
DE4112763A1 (en) * | 1990-04-26 | 1991-10-31 | Daetwyler Ag | Machining of copper plated cylinder for photogravure printing - by using machine with tools mounted on turntable |
DE9412276U1 (en) * | 1994-07-29 | 1995-08-24 | Hurth Modul GmbH, 09125 Chemnitz | Machine for manufacturing or machining bevel gears |
DE19806608A1 (en) * | 1998-02-18 | 1999-09-02 | M B A Gmbh | Workpiece processing with grinding tool |
JP2003071615A (en) * | 2001-08-30 | 2003-03-12 | Mori Seiki Co Ltd | Turret tool rest |
DE10240509C5 (en) * | 2002-09-03 | 2017-04-27 | Reishauer Ag | Gear and thread grinding machine |
-
2005
- 2005-07-13 EP EP05772012A patent/EP1781442A1/en not_active Withdrawn
- 2005-07-13 WO PCT/EP2005/053349 patent/WO2006010708A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2006010708A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2006010708A1 (en) | 2006-02-02 |
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17Q | First examination report despatched |
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Owner name: MONNIER & ZAHNER AG |
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Effective date: 20091016 |