EP0293399B1 - Führungsschiene und gliederkette für kettensäge - Google Patents

Führungsschiene und gliederkette für kettensäge Download PDF

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Publication number
EP0293399B1
EP0293399B1 EP87906654A EP87906654A EP0293399B1 EP 0293399 B1 EP0293399 B1 EP 0293399B1 EP 87906654 A EP87906654 A EP 87906654A EP 87906654 A EP87906654 A EP 87906654A EP 0293399 B1 EP0293399 B1 EP 0293399B1
Authority
EP
European Patent Office
Prior art keywords
chain
slide
guide rail
elements
link chain
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.)
Expired - Lifetime
Application number
EP87906654A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0293399A1 (de
Inventor
Willi Boller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gamma Stawag AG
Original Assignee
Gamma Stawag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gamma Stawag AG filed Critical Gamma Stawag AG
Priority to AT87906654T priority Critical patent/ATE65956T1/de
Publication of EP0293399A1 publication Critical patent/EP0293399A1/de
Application granted granted Critical
Publication of EP0293399B1 publication Critical patent/EP0293399B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B28D1/08—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws
    • B28D1/082—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with saw-blades of endless cutter-type, e.g. chain saws, i.e. saw chains, strap saws consisting of chain saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/02—Chain saws equipped with guide bar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/12—Lubricating devices specially designed for chain saws
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B33/00—Sawing tools for saw mills, sawing machines, or sawing devices
    • B27B33/14—Saw chains
    • B27B33/147—Saw chains with incorporated lubricating means
    • 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
    • B28D1/124—Saw chains; rod-like saw blades; saw cables

Definitions

  • the invention relates to a guide rail and link chain system for chainsaws for processing concrete, stone and masonry with a link chain, coolant channels guided through the guide rail, additional rails arranged on both longitudinal sides of the guide rail and with chain links which have at least partially lateral guide elements and cutting plates placed on the chain links .
  • Such a link chain for a chainsaw is known from publication D-A-3332051.
  • the guide rail, also known as the sword, of a chainsaw is provided with additional rails made of metal on the long sides.
  • the guide rail is hollow, this cavity serving as a coolant channel, and coolant channels are arranged on the side surfaces of the additional rails.
  • the associated link chain consists of rollers mounted on pins, which are connected to one another via guide and connecting links. The rollers run on the outer surface of the additional rail, and the chain is deflected via a chain wheel at the front end of the sword. Diamond-tipped inserts, which serve as cutting tools, are attached to the chain guide elements.
  • the link chain between the links is equipped with rollers which roll on the additional rails or guide rails and transmit the chain forces to them. It is assumed that the use of roller bearings or the principle of rolling friction is absolutely necessary to enable the sawing of rocks. This consideration is fundamentally correct. In practice, however, it can be seen that very high surface pressures occur in the area of the contact points of the rollers, which lead to damage and destruction of the additional rails or guide rails. The cutting dust deposited on the rolling surface further strengthens and accelerates this destruction process.
  • the guide rail / link chain system according to the invention has a significantly longer service life than the known chain saws. This is achieved in that the guide rail or the sword of the chainsaw has additional rails made of plastic on the two long sides, on which metallic sliding elements of the chain slide. These additional rails are inserted in grooves, which are located on the long sides of the sword. Materials with high abrasion and water resistance are suitable as plastics. Since the coolant channels are routed through the center area of the additional rails, the coolant and lubricant emerges in the middle area of the sliding surfaces. As a result, the cutting and grinding dust are washed away from the areas of the sliding surfaces, and a liquid film forms between the sliding rails and the sliding elements of the chain, which prevents the metallic chain links from being ground on the additional rails.
  • the joints in the chain are completely shielded from the outside, and grinding and cutting dust cannot penetrate them. This is ensured on the one hand by the fact that the sliding surfaces of the joints are covered on all sides and on the other hand that lubricant is pressed outwards from the center of the joint in a consistent form over all sliding surfaces.
  • Suitable lubricants are water-resistant greases with additives, e.g. Molybdenum and other known additives.
  • the pressure of the coolant ensures that only small amounts of lubricant emerge from the sliding surfaces between the guide elements and the sliding elements. This means that there is little loss of lubricant and the joints can be relubricated as part of normal work breaks.
  • this guide rail / link chain system achieves a service life that is several times longer than that of known link chains for concrete, stone and masonry. Since the components of the chain consist of flat elements that are not bent or bent, they can easily be ground to exact dimensions, which means that a cost-effective chain can be built. Since the inserts are attached to carrier plates, there is no danger that the hardened chain links will be softened by soldering. In addition, the cutting plates with their carrier plates can be attached to the chain links at the most convenient time for production, which in turn enables the chain to be manufactured more easily and more cheaply.
  • the section shown in Figure 1 from a guide rail 1, or a sword of a chainsaw shows the front side wall 18, the intermediate piece 16, to which the side walls are attached and are held at the correct distance from each other, and the one lying on the intermediate piece 16 upper additional rail 3.
  • this additional rail 3 consists of bakelite, ie a laminate, and is smoothly inserted into the space between the side walls 18, 19 of the guide rail 1.
  • the sliding elements 6 of the link chain 2 rest on the sliding surface 15 of the additional rail 3.
  • the sliding elements 6 are connected to one another via joints 5 by means of the side guide elements 7, 8.
  • cutting plates 4 are fastened, which are formed from diamond-tipped hard metal plates.
  • Figure 2 shows the configuration of the link chain 2 and the edge region of the guide rail 1 in an enlarged view.
  • the section shown goes through one of the joints 5 and a coolant channel 13 in the slide rail 3.
  • the joint 5 consists of a bolt 21 which has pins 23, 24 offset on both sides. These pins 23, 24 have a smaller diameter than the inner region of the pin 21.
  • This pin 21 is rotatably mounted in a bearing bush 20, which is pressed into the sliding element 6 in a seated manner.
  • the pins 23 and 24 are in turn mounted in bores in the side guide elements 7 and 8, wherein they are firmly connected to these side guide elements 7 and 8 in a known manner.
  • this is done by notching the outer surfaces of the pins 23 and 24 in a ring-shaped manner and thereby displacing material to the outside, and clamping the bolt 21 with the side guide elements 7 and 8.
  • the Dimensions between the two side guide elements 7 and 8 and the width of the bearing bush 20 and the sliding elements 6 are chosen so that the sliding elements 6 and the side guide elements 7, 8 are free of play and easily pivotable about the axes 22 against each other.
  • the side guide elements 7 and 8 are further designed such that they overlap the side surfaces 11, 12 of the additional rail 3, and thereby the link chain 2 is laterally guided on the additional rail 3 with as little play as possible.
  • the sliding elements 6 have sliding surfaces 9 on the lower side which rest on the sliding surface 15 of the additional rail 3.
  • Coolant channels 17 lead through the intermediate pieces 16 in the guide rail 1 from the inner cavity of the guide rail 1 to the outside.
  • Two coolant channels 13 each extend from these coolant channels 17 and are arranged in the center of the additional rail 3.
  • the outlet openings of these coolant channels 13 are located in the region of the central axis 14 on the sliding surface 15 of the additional rail 3. The coolant supplied via the guide rail 1 thus flows outward through the coolant channels 17 and 13 and flows outward via the sliding surface 15.
  • a lubricant channel 25 is located in the center of the joints 5. This lubricant channel 25 is closed on one side by a pin 30 and has a ball valve 32 loaded with a spring 31 on the other side. One or more radial bores 26 extend from the central lubricant channel 25 and form lubricant channels and enable the lubricant to be supplied to the outer jacket 27 of the bolt 21.
  • the ball valve 32 prevents the ingress of water, but allows water-resistant molybdenum grease to be pressed into the lubricant channels 25 and 26. The grease is pressed outward along the outer jacket 27 of the bolt 21 and also fills the sliding surfaces between the sliding elements 6 and the side guide elements 7 and 8 off.
  • the guide rail / link chain system therefore has a self-cleaning effect and continuously ensures optimal lubrication and a sliding film between all sliding surfaces. Since the pins 23, 24 of the bolt 21 are positively connected to the side guide elements 7 and 8, the outer casing 27 or the sliding surface of the bolt 21 is encapsulated to the outside and protected against contamination.
  • the cutting plates 4 are fastened on carrier plates 28.
  • the cutting plates 4 are normally attached to the carrier plates 28 by brazing processes.
  • the carrier plates 28 cover the full base of the cutting plates 4, which results in the greatest possible adhesion and contact area between the cutting plates 4 and the carrier plates 28.
  • Corresponding recesses are provided on the sliding elements 6 on the upper side 10, cams 29 engaging over the projecting edges of the carrier plates 28.
  • the carrier plates 28 are fastened in the recesses, or on the cams 29 of the sliding elements 6, by gluing or riveting the cams 29. This fastening method ensures simple and secure fastening and prevents the hardened sliding elements 6 from being softened again when the inserts 4 are fastened by soldering methods.
  • the pin 21 and the bearing bush 20 have a hardness of 55 to 65 Rockwell C or HRC and the sliding elements 6 and the side guide elements 7 and 8 a hardness of 35 to 48 Rockwell C or HRC. All known cutting and cooling agents for stone work can be used as coolants.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Mining & Mineral Resources (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Electroluminescent Light Sources (AREA)
  • Framework For Endless Conveyors (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Sawing (AREA)
  • Automatic Tool Replacement In Machine Tools (AREA)
EP87906654A 1986-12-23 1987-10-20 Führungsschiene und gliederkette für kettensäge Expired - Lifetime EP0293399B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87906654T ATE65956T1 (de) 1986-12-23 1987-10-20 Fuehrungsschiene und gliederkette fuer kettensaege.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH5208/86A CH671181A5 (ru) 1986-12-23 1986-12-23
CH5208/86 1986-12-23

Publications (2)

Publication Number Publication Date
EP0293399A1 EP0293399A1 (de) 1988-12-07
EP0293399B1 true EP0293399B1 (de) 1991-08-07

Family

ID=4289745

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906654A Expired - Lifetime EP0293399B1 (de) 1986-12-23 1987-10-20 Führungsschiene und gliederkette für kettensäge

Country Status (7)

Country Link
US (1) US4896648A (ru)
EP (1) EP0293399B1 (ru)
AT (1) ATE65956T1 (ru)
CH (1) CH671181A5 (ru)
DE (1) DE3772050D1 (ru)
DK (1) DK445788A (ru)
WO (1) WO1988004602A1 (ru)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH676215A5 (en) * 1988-07-07 1990-12-28 Gamma Stawag Ag Long life chain-saw blade
US5226404A (en) * 1989-09-22 1993-07-13 Mitsubishi Metal Corporation Cutting apparatus
US4971022A (en) * 1990-04-23 1990-11-20 Blount, Inc. Cutting chain for aggregate materials
EP0648586A1 (de) * 1993-10-19 1995-04-19 Etablissement Euroligna Maschinen Aggregate Industriebedarf Sägekette
US8151783B2 (en) * 2005-06-27 2012-04-10 Husqvarna Outdoor Products Inc. Tools and methods for making and using tools, blades and methods of making and using blades
US20060288992A1 (en) * 2005-06-27 2006-12-28 Anthony Baratta Tools and methods for making and using tools, blades and methods of making and using blades
WO2008141411A1 (en) * 2007-05-17 2008-11-27 S.T.L. Lubrifiants Inc. System and method for lubricating a chain saw with grease
EP3265277A1 (en) * 2015-03-04 2018-01-10 Husqvarna AB Guide bar with internal cavity
ITUA20163683A1 (it) * 2016-05-23 2017-11-23 Bonomi Srl Catena da taglio per il taglio di calcestruzzo armato ed altro
US10526891B2 (en) * 2018-03-29 2020-01-07 Diamond Stone Technologies Inc. Device and method for cutting quarry stone

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB578826A (en) * 1944-07-26 1946-07-12 John William Clubley Armstrong Improvements in or relating to portable chain saws
US2656832A (en) * 1950-04-15 1953-10-27 Perrier Fernand Machine for sawing stones and the like
DE938211C (de) * 1952-10-30 1956-01-26 Erwin Banholzer Vorrichtung zum Fuehren des Saegebandes von Bandsaege- und Schneidemaschinen
US2748810A (en) * 1955-02-21 1956-06-05 Leonard M Strunk Chain saw guide bar with lubricating means
US3334670A (en) * 1965-03-04 1967-08-08 Nicholson File Company Bearing assembly for a chain saw
US3459169A (en) * 1966-08-12 1969-08-05 Northern Lumber Co Inc Chain saw for cutting very hard materials and having plunge cutting means
US3478787A (en) * 1967-03-30 1969-11-18 Jacob P Miller Self-oiling means for saw chain links
US3545422A (en) * 1968-09-17 1970-12-08 George P Kingsley Chain saw apparatus for sawing reinforced concrete
SU875054A1 (ru) * 1980-02-19 1981-10-23 Молдавский Научно-Исследовательский И Проектно-Конструкторский Институт Строительных Материалов Баровый режущий орган
DE3016596A1 (de) * 1980-04-30 1981-11-05 Fa. Andreas Stihl, 7050 Waiblingen Anordnung zum schmieren von saegeketten an motorsaegen
SE430233B (sv) * 1982-02-16 1983-10-31 Ove Gustavsson Tetningsanordning och forfarande for framstellning av en tetningsanordning vid en kedjesag avsedd for sagning av harda material sasom betong
DE3332051C2 (de) * 1982-09-13 1987-02-19 Jachen Näfels Mayer Schrämarm für Steinschrämmaschinen zum Schneiden von Gestein, insbesondere Hartgestein, und Beton
US4517954A (en) * 1983-01-03 1985-05-21 Gran-Quartz Trading, Inc. Removable mount for cutting means
US4641432A (en) * 1983-02-16 1987-02-10 Suehiro Seiko Kabushiki Kaisha Chain saw guide bar and method of construction
DE3518990C2 (de) * 1985-05-25 1994-11-10 Stihl Maschf Andreas Führungsschiene für eine Kettensäge
DE3607011A1 (de) * 1986-03-04 1987-09-10 Franz Rebhan Schneidgarnitur fuer motorkettensaegen

Also Published As

Publication number Publication date
US4896648A (en) 1990-01-30
DK445788D0 (da) 1988-08-10
DE3772050D1 (de) 1991-09-12
CH671181A5 (ru) 1989-08-15
WO1988004602A1 (en) 1988-06-30
ATE65956T1 (de) 1991-08-15
EP0293399A1 (de) 1988-12-07
DK445788A (da) 1988-08-10

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