WO2000048786A1 - Method for cutting a workpiece - Google Patents
Method for cutting a workpiece Download PDFInfo
- Publication number
- WO2000048786A1 WO2000048786A1 PCT/EP2000/000811 EP0000811W WO0048786A1 WO 2000048786 A1 WO2000048786 A1 WO 2000048786A1 EP 0000811 W EP0000811 W EP 0000811W WO 0048786 A1 WO0048786 A1 WO 0048786A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- tool
- workpiece
- cutting edge
- axis
- axes
- Prior art date
Links
Classifications
-
- 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
Definitions
- the invention relates to a method for machining a workpiece.
- a method for machining a workpiece In the three-dimensional machining of workpieces, it is known to use high-speed milling processes. Relatively good surface qualities can be produced in particular by the high speeds of the tools and the resulting high cutting speeds. It is necessary to move the tool across the workpiece in many closely adjacent paths.
- the invention has for its object to provide a method for machining a workpiece which has a high degree of surface quality with ease of use, especially in three-dimensional surfaces.
- a tool provided with at least one cutting edge is moved along the surface in three axes of movement, the tool being positioned with the cutting edge in each case in a fourth axis relative to the surface.
- the method according to the invention is distinguished by a number of considerable advantages. According to the invention, it is thus possible to make a non-interrupted cut by means of a cutting edge that is moved along the three-dimensional surface.
- the positioning of the cutting edge of the tool relative to the surface results in the same cutting conditions regardless of the spatial configuration of the surface.
- These cutting conditions can be optimized in a simple manner by selecting the feed speed and the cutting edge geometry as well as by aligning the cutting edge.
- the method according to the invention can preferably be carried out on a high-speed milling machine (HSC milling).
- HSC milling high-speed milling machine
- the milling spindle present in such a machine is not continuously rotated, but is only rotated depending on the surface geometry of the workpiece in order to position the cutting edge of the tool accordingly.
- the tool can be cylindrical, spherical or rounded, it is possible to use coiled or straight cutting edges. Furthermore, it can be advantageous if the tool has a coating, for example a diamond coating.
- the method is therefore not limited to specific tools or specified workpiece geometries.
- the fourth axis about which the cutting edge of the tool can be positioned is the axis of rotation of the tool.
- this is not a requirement; rather, other arrangements of the axis of rotation can also be provided.
- the tool is preferably rotated in the fourth axis with regard to the orientation of its cutting edge relative to the surface.
- the cutting edge can thus always be optimally aligned.
- the rotation of the cutting edge of the tool about the fourth axis is preferably carried out continuously, for example using a stepping motor.
- the tool is rotated in both directions of rotation. It has proven to be particularly advantageous if in each case the surface normal of the workpiece, based on the three-dimensional surface, is taken as the reference variable or output variable and the cutting edge of the tool is aligned with this surface normal. This ensures that the rake angle or the clearance angle always remain constant or the same.
- the method according to the invention can be adapted in a variety of ways, in particular with regard to the cutting speeds, the cutting edge geometries, the workpiece properties, etc.
- a tool can be used which is similar to a milling tool, but it is also possible to use a tool to provide, which is more similar in terms of its geometry to a planing tool.
- the cutting speed that is the three-dimensional feed speed of the tool, can also be optimally designed. For example, it is possible to greatly reduce the cutting speed with small inner radii.
- the chip to be removed is kept correspondingly small in order to avoid overloading the tool and to ensure that no disturbing vibrations occur.
- the machine tool according to the invention which is used to carry out the method, preferably has a very high travel and positioning accuracy. This can be achieved, for example, by using linear motors. Furthermore, it can be advantageous if hydrostatic guides or air-bearing guides are provided for the individual slides of the machine.
- Fig. 1 is a schematic, simplified representation of the method according to the invention when machining a three-dimensional surface
- Fig. 2 is a greatly simplified, enlarged top view of a processing area according to the invention.
- a tool 2 which is provided with at least one cutting edge 3, is moved along a plurality of mutually parallel tracks 7, the movement of the tool 2 to produce the three-dimensional surface 1 taking place along three axes x, y and z.
- the tool 2 is mounted on a spindle 6, which can be pivoted about an axis W, as indicated by the double arrow.
- the tool 2 is thus guided along the track 7 over the three-dimensional surface 1.
- 2 shows an enlarged detailed view of the processing area.
- Several surface normals 4 are shown for the three-dimensional surface 1. These surface normals 4 are particularly advantageously suitable for aligning the position of the cutting edge 3 with the surface 1 (by rotating the spindle 6 about the axis W).
- the tool 2 has two symmetrical cutting edges located opposite one another. It is understood that in the context of the invention only one of these cutting edges is continuously engaged, while the other cutting edge can either be used as a reserve or can be provided with other cutting geometries, for example to produce a fine cut or the like.
- the invention relates to a method for machining a workpiece 5, in which in particular a three-dimensional, spatial surface 1 is machined, a tool 2 provided with at least one cutting edge being moved in three movement axes x, y, z along the surface 1 and wherein the tool 2 is positioned in a fourth axis W with a cutting edge 3 to the surface 1.
- a tool 2 provided with at least one cutting edge being moved in three movement axes x, y, z along the surface 1 and wherein the tool 2 is positioned in a fourth axis W with a cutting edge 3 to the surface 1.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002356945A CA2356945A1 (en) | 1999-02-18 | 2000-02-01 | Method for cutting a workpiece |
EP00912442A EP1073540A1 (en) | 1999-02-18 | 2000-02-01 | Method for cutting a workpiece |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19906858.5 | 1999-02-18 | ||
DE1999106858 DE19906858A1 (en) | 1999-02-18 | 1999-02-18 | Process for machining a workpiece |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2000048786A1 true WO2000048786A1 (en) | 2000-08-24 |
Family
ID=7897933
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/000811 WO2000048786A1 (en) | 1999-02-18 | 2000-02-01 | Method for cutting a workpiece |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1073540A1 (en) |
CA (1) | CA2356945A1 (en) |
DE (1) | DE19906858A1 (en) |
WO (1) | WO2000048786A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100111632A1 (en) * | 2006-12-22 | 2010-05-06 | Tingley Iii William Q | Method and apparatus for non-rotary machining |
US8821086B2 (en) | 2006-12-22 | 2014-09-02 | Tennine Corporation | Method and apparatus for controlled-fracture machining |
US9101991B1 (en) | 2014-07-17 | 2015-08-11 | Tennine Corp. | Method and apparatus for non-spindle multi-axis machining |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005048691B4 (en) | 2005-01-21 | 2012-09-13 | Siemens Ag | Tool and method for machining a workpiece from a rock-like material or a ceramic |
DE102005027829A1 (en) * | 2005-06-16 | 2006-12-21 | M-Drei Gmbh | Plate shaped work piece e.g. wooden plate, machining method for cupboard, involves machining plate`s front side by milling tool with curved edge, and inclining plane upper surface of side in exact angle to upper surface of workpiece |
EP3061563A4 (en) * | 2013-09-25 | 2017-07-26 | Jose Antonio Fernandez Garcia | Cutting method, machine and tools for continuous machining |
DE102014011199A1 (en) * | 2014-07-28 | 2016-01-28 | Heinz Deitert | Method for machining recesses in workpieces and apparatus for this purpose |
JP6963833B2 (en) * | 2019-07-24 | 2021-11-10 | 株式会社レイズエンジニアリング | How to manufacture vehicle wheels |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989010237A1 (en) * | 1988-04-19 | 1989-11-02 | Renishaw Plc | Apparatus for tracking the surface of a workpiece |
US4968195A (en) * | 1986-01-28 | 1990-11-06 | Kabushiki Kaisha Toyota Chuo Kenkyosho | Method and tool for machining a three dimensional surface |
EP0659520A1 (en) * | 1993-12-15 | 1995-06-28 | Starrfräsmaschinen AG | Machine-tool |
DE19616526A1 (en) * | 1996-04-25 | 1997-11-06 | Rainer Jung | Machine for the machining of optical materials for the production of optical parts |
-
1999
- 1999-02-18 DE DE1999106858 patent/DE19906858A1/en not_active Withdrawn
-
2000
- 2000-02-01 WO PCT/EP2000/000811 patent/WO2000048786A1/en not_active Application Discontinuation
- 2000-02-01 CA CA002356945A patent/CA2356945A1/en not_active Abandoned
- 2000-02-01 EP EP00912442A patent/EP1073540A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4968195A (en) * | 1986-01-28 | 1990-11-06 | Kabushiki Kaisha Toyota Chuo Kenkyosho | Method and tool for machining a three dimensional surface |
WO1989010237A1 (en) * | 1988-04-19 | 1989-11-02 | Renishaw Plc | Apparatus for tracking the surface of a workpiece |
EP0659520A1 (en) * | 1993-12-15 | 1995-06-28 | Starrfräsmaschinen AG | Machine-tool |
DE19616526A1 (en) * | 1996-04-25 | 1997-11-06 | Rainer Jung | Machine for the machining of optical materials for the production of optical parts |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100111632A1 (en) * | 2006-12-22 | 2010-05-06 | Tingley Iii William Q | Method and apparatus for non-rotary machining |
US8821086B2 (en) | 2006-12-22 | 2014-09-02 | Tennine Corporation | Method and apparatus for controlled-fracture machining |
US9101991B1 (en) | 2014-07-17 | 2015-08-11 | Tennine Corp. | Method and apparatus for non-spindle multi-axis machining |
Also Published As
Publication number | Publication date |
---|---|
EP1073540A1 (en) | 2001-02-07 |
DE19906858A1 (en) | 2000-08-31 |
CA2356945A1 (en) | 2000-08-24 |
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