EP1150816A1 - Saw blade for gang saws with weakened areas - Google Patents
Saw blade for gang saws with weakened areasInfo
- Publication number
- EP1150816A1 EP1150816A1 EP00909126A EP00909126A EP1150816A1 EP 1150816 A1 EP1150816 A1 EP 1150816A1 EP 00909126 A EP00909126 A EP 00909126A EP 00909126 A EP00909126 A EP 00909126A EP 1150816 A1 EP1150816 A1 EP 1150816A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- saw blade
- blade body
- blade
- cutting
- clamping
- 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- Withdrawn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
- 239000000463 material Substances 0.000 claims description 31
- 230000003313 weakening effect Effects 0.000 claims description 12
- 229910003460 diamond Inorganic materials 0.000 claims description 5
- 239000010432 diamond Substances 0.000 claims description 5
- 238000005498 polishing Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 description 3
- 230000009467 reduction Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/12—Saw-blades or saw-discs specially adapted for working stone
- B28D1/127—Straight, i.e. flat, saw blades; strap saw blades
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D61/00—Tools for sawing machines or sawing devices; Clamping devices for these tools
- B23D61/12—Straight saw blades; Strap saw blades
- B23D61/123—Details of saw blade body
Definitions
- the present invention relates to a saw blade for gang saws, consisting of an elongated strip-shaped blade body which can be acted upon in the region of its two ends by means of a tensioning device with a tensioning force acting longitudinally in the pulling direction, one longitudinal edge side a cutting side for the arrangement of cutting elements, in particular diamond segments for stone processing, and the opposite longitudinal edge side form a back side.
- DE 39 31 837 C1 describes a frame saw with a special parallelogram kinematics, the or each being rocked by a plurality of saw blades clamped in parallel at a distance. It is provided that the cutting side of each sheet is designed in the shape of a circular arc with a circular arc radius and, due to the special kinematics, generates an arcuate cutting contour in the material to be cut with a cutting contour radius that differs from the circular arc radius of the cutting side, the swing radius of each sheet being selected in this way that between the cutting edge and the cutting contour viewed transversely to the direction of the oscillating movement - a work contact takes place in the form of a quasi-point contact.
- the invention has for its object to provide a saw blade of the generic type, which ensures a further improved cut quality in use, especially when cutting very thin material cuts.
- the blade body has material weakening points in such an arrangement distributed over its area that when the blade body is subjected to the clamping force, the cutting side is subjected to a first partial clamping force which is higher than a second partial clamping force on the back side.
- a first partial clamping force which is higher than a second partial clamping force on the back side.
- the material weakening points within the blade body lead to cross-sectional weakening or even cross-sectional interruptions, which, due to their special distribution, influence the resilience transfer so that it is concentrated on the cutting side.
- the ratio of the first partial clamping force on the cutting side to the second partial clamping force on the back side is preferably at least 2: 1 and, if possible, even approaches at least 3: 1.
- the saw blade can advantageously be designed with a greater height, ie the width of the strip shape measured between the cutting side and the back side, without the overall required clamping force having to be increased significantly.
- the greater blade height which can be approximately three times that of the usual blades due to the invention, results in a significantly improved guidance of the blade in the cutting gap, which improves the quality of the cut and also leads to increased security against undesired running of the blade.
- This allows even very thin material cuts can be carried out with high precision, e.g. B. Sil iciumschni te for semiconductor technology. As a result of the asymmetrical distribution of the clamping force according to the invention, this can be kept relatively low overall.
- the clamping force would actually have to be increased accordingly if the blade height was increased due to the inevitable increase in cross-section of the blade, for example if the blade height was doubled to approximately twice the clamping force.
- the invention advantageously achieves a reduction in the total clamping force by specifically reducing the clamping force on the back side, but nevertheless ensuring the required high clamping force on the cutting side.
- the material weakening points are designed as individual, spaced-apart holes which completely interrupt the material cross section of the sheet body in places.
- pieces of material can be held within the free hole cross section in such a way that, for the purpose of blade guidance and / or polishing during a sawing process, both sides of the cutting surfaces within a cutting gap cutting material.
- These pieces of material are, in particular, diamond segments which, seen perpendicularly to the plane of the sheet, project beyond the sheet body on both sides, approximately according to the thickness of the cutting gap.
- This embodiment is based on the knowledge that the Known system with parallelogram kinematics described at the beginning because each quasi-point processing of each cutting element of the blade processed only a short distance of the cut. This can result in scoring in the cutting direction, which can now advantageously be eliminated (equalized) by the configuration according to the invention.
- this embodiment contained in claims 8 to 11 can in principle also be used independently of the asymmetrical tension force distribution according to claim 1.
- this measure is suitable for practically any saw blades (e.g. also circular saw blades and the like), which then according to the invention have guide and / or polishing elements distributed over the blade surface, which are preferably in the region of holes and / or in each case on the surface of the leaf body are attached.
- FIG. 1 is a plan view of the blade side of a saw blade according to the invention
- FIG. 2 is a view in the direction of arrow II of FIG. 1 on the back side
- Fig. 3 is an enlarged cross section along the line AA in Fig. 1 in an advantageous embodiment of the invention
- Fig. 4 is a view analogous to Fig. 1 with a schematic representation of a voltage curve within the saw blade when applied with clamping force.
- a saw blade 1 consists of an elongated, strip-shaped blade body 2, which is connected at its two ends 4 and 5 with a tension rod 6, 7 in each case.
- Each of the two clamping rods 6, 7 has a fishing neck 8, the longitudinal central axes of which define a clamping force axis 10.
- Each tensioning rod 6, 7 has a preferably approximately T-shaped clamping section 12 at its end pointing away from the leaf body 2.
- the tensioning rods 6, 7, and thus the blade body 2 can be acted upon with a tensioning force F acting longitudinally in the pulling direction by means of a generally hydraulic tensioning device, not shown and also not described in detail.
- the blade body 2 has two longitudinal edge sides, one longitudinal edge side forming a cutting side 14 and the opposite longitudinal edge side forming a back side 16.
- cutting elements 18 are fastened, which are in particular diamond segments for processing stone or stone-like materials, such as silicon in particular.
- the cutting elements 18 are not shown in FIGS. 1 and 4; only the illustration in FIG. 3 also contains one of the cutting elements 18.
- the sheet body 2 has material weakening points 20 in such a way over its surface Distributed arrangement that when the blade body 2 is acted upon by the clamping force F, a first partial clamping force F x occurs on the cutting side 14 and a second partial clamping force F 2 occurs on the back side.
- the first partial clamping force F is in any case greater than the second partial clamping force F 2 .
- the ratio F x : F 2 is preferably at least 2: 1, but in particular approximately 3: 1 or higher.
- the material weakening points 20, which are preferably designed as individual, spaced-apart holes 22, are arranged approximately on a line which - preferably approximately in an arc shape - runs along the length of the blade body 2, in each case closer to the rear side 16 and in the region of the ends Longitudinal center closer to the cutting side 14.
- This row arrangement has in particular a course which is convexly curved in the direction of the cutting side 14.
- the material weakening points 20 can also be recesses on one or both sides, ie. H. Reductions in the thickness of the sheet body 2 may be formed.
- each tensioning rod 6, 7 has a leaf holding section 26 for the holding connection to the leaf body 2, which consists of an extension section 26a of the fishing neck 8 and an angled section 26b extending from the fishing neck 8 in the direction of the rear side 16.
- each piece of material 28 is each held within the free hole cross section in such a way that, for the purpose of sheet guidance and / or polishing during a sawing process, both sides of the cutting surfaces within a cutting gap cutting material.
- each piece of material 28, viewed perpendicular to the plane of the sheet is on both sides above the sheet body 2 (FIG. 3), and preferably approximately according to the thickness or clear width of the respective cutting gap.
- the material pieces 28 are held, in particular soldered, on supporting portions 30 of the sheet body 2 projecting into the free hole cross section, in accordance with the invention in such a way that not all of the hole 22 is filled, so that each hole 22 functions as a material or cross-sectional weakening for the maintains asymmetric clamping force distribution according to the invention.
- the pieces of material 28 are expediently formed by diamond segments.
- the cutting side 14 of the blade body 2 is curved, preferably curved in the shape of a circular arc, in particular concave.
- the stress distribution within the sheet is also indicated.
- the stress distribution can also be influenced by certain additional measures, as shown, for example, recesses 32 in the inner angle region between the fishing neck 8 and the blade holding section 26.
- the invention is not limited to the exemplary embodiments shown and described, but also encompasses all embodiments having the same effect in the sense of the invention. Furthermore, the invention has not yet been limited to the combination of features defined in claim 1, but can also be any other combination of certain features all of the individual features disclosed are defined. This means that in principle practically every single feature of claim 1 can be omitted or replaced by at least one single feature disclosed elsewhere in the application. In this respect, claim 1 is only to be understood as a first attempt at formulation for an invention.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE29901675U | 1999-02-01 | ||
DE29901675U DE29901675U1 (en) | 1999-02-01 | 1999-02-01 | Saw blade for frame saws |
PCT/EP2000/000764 WO2000046003A1 (en) | 1999-02-01 | 2000-01-31 | Saw blade for gang saws with weakened areas |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1150816A1 true EP1150816A1 (en) | 2001-11-07 |
Family
ID=8068745
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00909126A Withdrawn EP1150816A1 (en) | 1999-02-01 | 2000-01-31 | Saw blade for gang saws with weakened areas |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1150816A1 (en) |
AU (1) | AU3151700A (en) |
DE (1) | DE29901675U1 (en) |
WO (1) | WO2000046003A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1800785A1 (en) * | 2005-12-23 | 2007-06-27 | BÖHLER-UDDEHOLM Precision Strip GmbH & Co KG | Gang saw for cutting stones and blank band therefor |
KR101439885B1 (en) * | 2013-05-06 | 2014-09-12 | 이화다이아몬드공업주식회사 | Cutting tools and cutting apparatus having the same |
CN103600124B (en) * | 2013-11-12 | 2016-08-17 | 浙江宏恩智能装备技术有限公司 | The manufacture method of frame saw blade |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1104221A (en) * | 1954-05-05 | 1955-11-17 | Saw blade | |
CH482516A (en) * | 1967-07-25 | 1969-12-15 | Busatis Geb Gmbh | Saw blade for gang saw machines, process for its production and device for carrying out the process |
CH497256A (en) * | 1968-10-28 | 1970-10-15 | Egleme Paul | Reciprocating saw blade |
DE2226220A1 (en) * | 1972-05-30 | 1973-12-13 | Jansen Fa R | SAW BLADE FOR CAGE SAWS |
DE2635944A1 (en) * | 1976-08-10 | 1978-03-16 | Thoeress Dietmar | Reduced stress machine saw blade - has rear side stretched into convex arched shape to reduce strain at teeth base line |
DE2703948C3 (en) * | 1977-01-31 | 1981-06-04 | Richard Felde Gmbh & Co Kg, 5630 Remscheid | Gang saw blade serrated on one side |
JPS614617A (en) * | 1984-06-20 | 1986-01-10 | Oishi Eng:Kk | Diamond tipped saw equipped with rubber-state protrusion |
-
1999
- 1999-02-01 DE DE29901675U patent/DE29901675U1/en not_active Expired - Lifetime
-
2000
- 2000-01-31 EP EP00909126A patent/EP1150816A1/en not_active Withdrawn
- 2000-01-31 WO PCT/EP2000/000764 patent/WO2000046003A1/en not_active Application Discontinuation
- 2000-01-31 AU AU31517/00A patent/AU3151700A/en not_active Abandoned
Non-Patent Citations (1)
Title |
---|
See references of WO0046003A1 * |
Also Published As
Publication number | Publication date |
---|---|
AU3151700A (en) | 2000-08-25 |
DE29901675U1 (en) | 2000-06-29 |
WO2000046003A1 (en) | 2000-08-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
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17P | Request for examination filed |
Effective date: 20010830 |
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AK | Designated contracting states |
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17Q | First examination report despatched |
Effective date: 20031007 |
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GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
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RBV | Designated contracting states (corrected) |
Designated state(s): BE CH DE ES FR IT LI |
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STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
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18D | Application deemed to be withdrawn |
Effective date: 20041005 |