EP1915225A1 - Method for producing internal and external toothings on thin-walled, cylindrical hollow parts - Google Patents
Method for producing internal and external toothings on thin-walled, cylindrical hollow partsInfo
- Publication number
- EP1915225A1 EP1915225A1 EP05758521A EP05758521A EP1915225A1 EP 1915225 A1 EP1915225 A1 EP 1915225A1 EP 05758521 A EP05758521 A EP 05758521A EP 05758521 A EP05758521 A EP 05758521A EP 1915225 A1 EP1915225 A1 EP 1915225A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hollow part
- profiling
- profiling tool
- mandrel
- profile
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/06—Methods for forging, hammering, or pressing; Special equipment or accessories therefor for performing particular operations
- B21J5/12—Forming profiles on internal or external surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D15/00—Corrugating tubes
- B21D15/02—Corrugating tubes longitudinally
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D53/00—Making other particular articles
- B21D53/26—Making other particular articles wheels or the like
- B21D53/28—Making other particular articles wheels or the like gear wheels
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
- B21K1/30—Making machine elements wheels; discs with gear-teeth
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49462—Gear making
- Y10T29/49467—Gear shaping
- Y10T29/49474—Die-press shaping
Definitions
- the present invention relates to a method according to the preamble of claim 1 and a device according to the preamble of claim 11.
- Circular path of the profile rollers when engaging in the workpiece creates arcuate longitudinal contours, which depending on the size of the web diameter have a larger or smaller radius, but are always present.
- Profile rolls consists of the fact that the teeth on a cylindrical workpiece with a shoulder can not be made close to this shoulder. Due to the circular path of the profile rollers remains between the end of the profiling and the shoulder a certain section on the workpiece, which can not be edited.
- the object of the present invention was to find a method and an apparatus which a accurate profiling of thin-walled, cylindrical hollow bodies with a defined profile geometry, even close to a shoulder area zoom.
- the profiling tool is displaced axially relative to the hollow part at a constant radial infeed depth until the desired profile length has been reached.
- the profile can be completely generated in its entire length, wherein the entire forming work is divided into a plurality of individual steps.
- the forming forces of each individual step can be kept relatively small.
- the profiling tool can be positioned close to a possible shoulder of the hollow part thanks to substantially vertical oscillating movement with respect to the surface of the hollow part, thus profiling up to close to this shoulder. This means that the profiling tool performs virtually no movement in the axial direction and thus no free
- the profiling tool is delivered radially to the longitudinal axis of the hollow part up to a predefined feed depth for axial displacement.
- the hollow part can be arranged with sufficient free space in the processing device resp. be connected with a workpiece holder.
- a change of direction of the axial displacement between the profiling tool and the hollow part is carried out at least once, preferably after reaching the desired profile length back to the original relative starting position between the profiling tool and the hollow part.
- Profiling tool radially moved out of the profile of the hollow part.
- the finished molded hollow part can be easily removed from the processing device and insert a new blank.
- a defined profiling such as a toothing with a defined pitch.
- the oscillating stroke movement of the profiling tools is chosen to be greater than the maximum radial insertion depth of the profiling tools into the hollow part.
- the hollow part is advantageously intermittently, synchronized with the oscillating stroke movement rotates about its axis, preferably in each case by the pitch of the profiling to be generated.
- the profiling tool can be operated at over 1000 beats per minute, preferably over 1500 beats per minute. This allows very high production rates to be achieved, which is of great advantage, especially for mass production in the automotive industry.
- the hollow part is placed on a profiled mandrel for machining, which is arranged displaceable relative to the profiling tool along the longitudinal axis.
- This will be the outdoor as well as the Inner profile of the hollow body made according to the specifications of the shape quickly and very accurate.
- the profiling of the mandrel ranges from its free end to a radially outwardly projecting shoulder and it is placed a hollow part, which is pot-shaped and also a shoulder resp. has an edge.
- Such hollow parts are used for example in gearbox application, as for the transmission of rotation and torque in automatic transmissions. Often the profiles must be exact
- the profiling tool for the first process section is located in the area of the shoulder of the
- the mandrel is axially displaced away from the profiling tool.
- either the profiling tool or preferably the hollow part can be moved in the machine to produce the axial relative movement between the hollow part and the profiling tool.
- This movement is advantageously carried out in such a length until the profiling tool no longer comes to act on the hollow part.
- This movement is referred to as a pulling movement, since the profiling tool moves practically after the piercing process to the base of the profile pulling relative to the hollow part and thus the entire length of the profiling is generated.
- the profiling tool is first in the region of the free end of the hollow part resp.
- the relative movement between Profiltechnikstechnikmaschine and hollow part in the machine can be accomplished by axial displacement of the hollow part. This movement is referred to as an abutting movement, since the profiling tool primarily shapes and completes the profile against the edge of the hollow part.
- the tool can be delivered outside the free end to the predefined feed depth and only then brought to the hollow part to act.
- At least two profiling tools arranged radially opposite one another are used, which are preferably driven in synchronism with one another with respect to their radial infeed and their oscillatory movement. This ensures optimal force distribution and introduction.
- the profiling tool is delivered radially in relation to the workpiece continuously or in discrete, adjustable steps until the final profile depth of the hollow part is reached.
- the device for carrying out the method according to the invention has at least one tool holder operatively connected to an eccentric drive
- the Machining direction of the punch is closest.
- the remainder of the working surface of the stamp can penetrate into the surface, in particular when the hollow body is pulled, and a first pre-deformation of the hollow body can take place.
- the calibration zone In the second stage of the procedure, when the punch is moved axially with respect to the hollow body with constant radial infeed, the calibration zone then only needs to carry out the final deformation of the profile.
- the length of the stamp resp. the length of the working profile longer than the length of the profile to be generated in the hollow body.
- the profile is preformed.
- the length of the calibration zone is only a fraction of the total length of the stamp res. the length of the working profile.
- This calibration zone is ultimately decisive for the shaping and accuracy of the profiling, since only this calibration zone is in contact with the hollow part at the end of the radial infeed.
- the stamp will be made of a high-strength material, resp. have a corresponding surface treatment, as long as possible
- the device has at least two profiling tools arranged opposite each other with respect to the longitudinal axis of the hollow body.
- Figure 1 shows schematically the basic structure of a conventional impact rolling device with circulating on a circular path profiling rollers.
- FIG. 2 schematically shows the basic structure of a device according to the invention for carrying out the method according to the invention
- FIG. 3 shows the longitudinal section through a cup-shaped hollow body placed on a mandrel before processing with a profiling tool according to the invention
- FIG. 4 shows the longitudinal section of FIG. 3 after the first method section of the method according to the invention
- FIG. 6 shows the longitudinal section through a pot-shaped hollow body placed on a mandrel before the alternative machining with a profiling tool
- FIG. 7 shows the side view of a profiling tool according to the invention.
- the hollow body 1 shows schematically the basic structure of a conventional impact rolling device for generating internal and external teeth on a cylindrical hollow body 1.
- the hollow body 1 is formed as a thin-walled pot, which on a profiled mandrel. 2 is postponed and processed from outside by means of arranged on a circular path K profile rollers 3 beating.
- the profile rollers 3 are thereby delivered radially against the axis A of the hollow body until the desired tread depth has been achieved on the hollow body 1.
- the profiles 4 are produced on the hollow body 1 at the front end with a straight end, while the profile ends tapering, with a radius corresponding to the shape of the circular path K ends. Now, if the profiles 4 must be formed close to a protruding radially outwardly of the hollow body 1 shoulder, so this process can be resp. do not use this device.
- FIG. 2 also shows schematically the basic construction of a device for the machining of cylindrical, thin-walled hollow bodies according to the invention.
- a profiled mandrel 2 is used, on which the hollow body 1 to be profiled is placed.
- the hollow body 1 here now has an outwardly projecting shoulder 1 '.
- the profiles 4 should now be carried out from the front side to close to the shoulder.
- profiling tools 5 are now used, which can be delivered radially with respect to the axis A of the hollow body 1.
- the profiling tools 5 are driven for example by means of an eccentric drive (not shown for clarity) in a linear oscillating movement exactly radially to the axis A.
- FIG 3 the longitudinal section through the mandrel 2 is shown with attached hollow body 1, wherein the profiling tool 5 is in the starting position for the processing of the shoulder 1 'of the hollow body 1.
- the hollow body 1 is pressed firmly against the mandrel 2 in the axial direction.
- the mandrel 2 advantageously has a toothing respectively. Longitudinal profiling on which the hollow body 1 rests with its inner side before machining. Next, the mandrel 2 a shoulder 2 'on.
- the profiling tools 5 are now placed in the first process section in a sudden hammering action on the surface of the hollow body 1. Simultaneously with this oscillating movement of the profiling tools 5, these are now in the first process section radially against the axis A of the hollow body 1 to a previously defined resp. set depth, as can be seen from the longitudinal section of Figure 4. At the end of this first process section, the profile is now formed in the region of the shoulder 1 ', while it is first preformed to the left to the front edge of the hollow body 1, but not yet fully formed.
- the profiling tools 5 can be operated at a speed of over 1000 beats per minute, preferably even at over 1500 beats per minute.
- the profiling tools 5 can be delivered in each case for each complete hollow body revolution in the radial direction in each case by at least about 0.1 mm until the desired tread depth is reached.
- Profiling tool 5 is located axially in front of the end face of the hollow body 1, and is delivered radially in the predefined Zustelltiefe. For the actual processing of the hollow body 1 is the
- Profiling tool 5 now pushed axially in the direction of the shoulder 1 'of the hollow body 1 until reaching the desired profile length.
- the hollow body 1 is advantageously close to the end face of the mandrel 2, and the shoulder 1 'has a small clearance relative to the shoulder 2' of the mandrel 2.
- the material of the hollow body 1 during processing in the direction of this shoulder 2 'expand can take place.
- FIG 7 the side view of a profiling tool 5 is still shown, as it can be used for example for the inventive method.
- the profiling tool 5 is formed as a punch and has on its machining side 6 a corresponding in cross section of the profile 4 to be produced of the hol body 1 form, for example a
- the lower edge 7 of the machining side 6 is thereby arranged in relation to the axis A of the hollow body at an acute angle ⁇ . Depending on the shape and depth of the profile 4 to be produced, this angle is between 0.5 ° and 10 °.
- the lower edge 7 extends for example straight, but may also have a slight curvature.
- a calibration zone 8 is formed at the right end of the profiling tool 5 according to FIG. 7. In the region of this calibration zone 8, the lower edge 7 are aligned parallel to the axis A of the hollow body 1 and the contour of the deformation zone 6 corresponds to the cross section of the profile to be produced on the outside of the hollow body 1.
- the region 7 extends from the calibration zone 8 at an angle or possibly in an arc to the opposite ends of the profiling tool 5.
- This angle resp. Arc corresponds to the contour of the preforming region of the profile 4 to be produced. It has been shown that it is advantageous that the length of the calibration zone 8 is only one Fraction of the total length of the profiling tool 5 corresponds.
- the axial feed of the hollow body 1 resp. of the mandrel 2 is advantageous to tune to the length of the calibration zone 8 and is the use of two radially opposite profiling tools 5 advantageously a maximum of twice this length in a full revolution of the hollow body.
- the stroke of the profiling tools 5 of the oscillating movement is dimensioned such that it is greater than the maximum radial infeed depth of the first method section.
- the profiling tools 5 arrive at each stroke once outside the contour of the surface of the hollow body 1.
- the hollow body 1, respectively. the mandrel 2 in the same frequency as the oscillation of the profiling tool and synchronized to this movement are preferably rotated intermittently.
- the rotational movement is advantageously carried out in each case exactly by one division step of the profiling, so that successive abrupt actions of the profiling tools 5 in adjacent profiles 4 of the hollow body 1 take place.
- a very precise and uniform profiling can be generated on the entire circumference of the hollow body 1.
- Very high production rates can be achieved by the already mentioned high rate of impact, which is particularly advantageous for mass production, for example in the automotive industry.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Turning (AREA)
- Dental Prosthetics (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
Claims
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/CH2005/000406 WO2007009267A1 (en) | 2005-07-15 | 2005-07-15 | Method for producing internal and external toothings on thin-walled, cylindrical hollow parts |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1915225A1 true EP1915225A1 (en) | 2008-04-30 |
EP1915225B1 EP1915225B1 (en) | 2017-11-01 |
Family
ID=35735096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05758521.8A Active EP1915225B1 (en) | 2005-07-15 | 2005-07-15 | Method for producing internal and external toothings on thin-walled, cylindrical hollow parts |
Country Status (8)
Country | Link |
---|---|
US (1) | US8117884B2 (en) |
EP (1) | EP1915225B1 (en) |
JP (1) | JP4873661B2 (en) |
KR (1) | KR101292287B1 (en) |
CN (1) | CN101198425B (en) |
CA (1) | CA2615220C (en) |
ES (1) | ES2676420T3 (en) |
WO (1) | WO2007009267A1 (en) |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH706436A1 (en) | 2012-04-25 | 2013-10-31 | Grob Ernst Fa | Method and apparatus for producing provided with an internal toothing thick-walled hollow wheel gears. |
CN102990472B (en) * | 2012-11-17 | 2016-06-22 | 山东省青岛生建机械厂 | High-speed intermittent dividing mechanism |
AT514020B1 (en) * | 2013-03-07 | 2015-05-15 | Steyr Mannlicher Gmbh | Method for producing a run with troughs |
KR102282551B1 (en) | 2013-09-04 | 2021-07-27 | 이데미쓰 고산 가부시키가이샤 | Carbazole derivative, material for organic electroluminescent element which comprises same, and organic electroluminescent element and electronic device each manufactured using same |
MX371374B (en) * | 2013-10-23 | 2020-01-28 | Grob Ernst Fa | Composite brake disc and method and device for producing same. |
EP2982456B1 (en) * | 2014-08-05 | 2016-11-30 | Feintool International Holding AG | Device and method for the production of coupling bodies with teeth and tooth sections suitable for synchronisation systems |
CN105436327B (en) * | 2014-08-12 | 2018-02-02 | 博世华域转向***(烟台)有限公司 | A kind of lower steering spindle spline riveting device of steering column |
US9890808B2 (en) | 2015-04-22 | 2018-02-13 | American Axle & Manufacturing, Inc. | Telescoping propshaft |
DE102016103946A1 (en) * | 2016-03-04 | 2017-09-07 | Leifeld Metal Spinning Ag | Method and device for forming a workpiece with drum-shaped peripheral wall |
US10837072B2 (en) * | 2016-08-29 | 2020-11-17 | Magna Powertrain Inc. | Splined power transmission components made using heat-assisted calibration process and method of forming such splined power transmission components |
CN108246917B (en) * | 2018-02-05 | 2020-02-07 | 吉林大学 | Clutch hub tooth-shaped rolling forming device and machining process |
CH714660A1 (en) | 2018-02-16 | 2019-08-30 | Grob Ernst Fa | Apparatus and method for producing a ring gear with internal and external teeth and ring gear. |
CH714772A1 (en) | 2018-11-15 | 2019-09-13 | Grob Ernst Fa | Device and method for cold forming profiling of workpieces. |
EP3670018A1 (en) * | 2018-12-20 | 2020-06-24 | Leifeld Metal Spinning AG | Method and reforming assembly for producing a drum-shaped gearing part |
EP3711707B1 (en) * | 2019-03-21 | 2022-01-19 | SIRONA Dental Systems GmbH | Relative orientation between coupled processing tools and blank bodies |
CN111014392B (en) * | 2019-12-06 | 2021-08-27 | 吉林大学 | Clutch hub tooth form axial multipoint roll forming device |
CN111842754B (en) * | 2020-07-08 | 2021-08-27 | 西安交通大学 | Progressive radial forging device and process for arc-shaped tooth-bottom non-involute tooth-shaped four-hammer head |
CH718706A1 (en) | 2021-06-04 | 2022-12-15 | Grob Ernst Fa | Device and method for cold-forming profiling of workpieces. |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1324090A (en) * | 1915-10-19 | 1919-12-09 | Lorillard Co P | Bale-band tightener. |
DE1280198B (en) * | 1961-07-07 | 1968-10-17 | Grob Ernst Fa | Process for non-cutting profiling, preferably toothing, of cylindrical metallic workpieces and device for carrying out the process |
US3352138A (en) * | 1965-10-23 | 1967-11-14 | Barber Colman Co | Tool for forming toothed parts |
DE2401671A1 (en) * | 1974-01-15 | 1975-07-24 | Rueggeberg August Fa | METHOD OF MANUFACTURING A FILE FROM A THIN-WALLED PIPE |
JP3089369B2 (en) * | 1992-02-04 | 2000-09-18 | 本田技研工業株式会社 | Molding device for cup-shaped products with splines having snap ring grooves |
JPH0679390A (en) * | 1992-09-04 | 1994-03-22 | Mitsubishi Heavy Ind Ltd | Forging method of bar stock |
JPH07265990A (en) * | 1994-03-28 | 1995-10-17 | Mazda Motor Corp | Formation of cylindrical parts and device thereof |
JP3281175B2 (en) * | 1994-04-18 | 2002-05-13 | 株式会社東芝 | Press forming equipment |
FR2755042B1 (en) * | 1996-10-24 | 1998-12-24 | Lemforder Nacam Sa | PROCESS FOR OBTAINING SPLINES ON A TREE |
-
2005
- 2005-07-15 CA CA2615220A patent/CA2615220C/en not_active Expired - Fee Related
- 2005-07-15 US US11/994,376 patent/US8117884B2/en active Active
- 2005-07-15 JP JP2008520686A patent/JP4873661B2/en not_active Expired - Fee Related
- 2005-07-15 KR KR1020087002571A patent/KR101292287B1/en active IP Right Grant
- 2005-07-15 ES ES05758521.8T patent/ES2676420T3/en active Active
- 2005-07-15 CN CN200580050082XA patent/CN101198425B/en not_active Expired - Fee Related
- 2005-07-15 EP EP05758521.8A patent/EP1915225B1/en active Active
- 2005-07-15 WO PCT/CH2005/000406 patent/WO2007009267A1/en active Application Filing
Non-Patent Citations (1)
Title |
---|
See references of WO2007009267A1 * |
Also Published As
Publication number | Publication date |
---|---|
KR101292287B1 (en) | 2013-08-01 |
US8117884B2 (en) | 2012-02-21 |
KR20080030071A (en) | 2008-04-03 |
US20100126020A1 (en) | 2010-05-27 |
JP4873661B2 (en) | 2012-02-08 |
EP1915225B1 (en) | 2017-11-01 |
JP2009500179A (en) | 2009-01-08 |
CA2615220A1 (en) | 2007-01-25 |
WO2007009267A1 (en) | 2007-01-25 |
CA2615220C (en) | 2013-01-08 |
ES2676420T3 (en) | 2018-07-19 |
CN101198425B (en) | 2011-06-08 |
CN101198425A (en) | 2008-06-11 |
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