EP0309660B1 - Lame de scie alternative à cadre - Google Patents

Lame de scie alternative à cadre Download PDF

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Publication number
EP0309660B1
EP0309660B1 EP88110633A EP88110633A EP0309660B1 EP 0309660 B1 EP0309660 B1 EP 0309660B1 EP 88110633 A EP88110633 A EP 88110633A EP 88110633 A EP88110633 A EP 88110633A EP 0309660 B1 EP0309660 B1 EP 0309660B1
Authority
EP
European Patent Office
Prior art keywords
teeth
saw blade
corrosion
blade
sheet
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
EP88110633A
Other languages
German (de)
English (en)
Other versions
EP0309660A1 (fr
Inventor
Willi Kunz
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.)
Saint Gobain Diamantwerkzeuge GmbH and Co KG
Original Assignee
Ernst Winter and Sohn Diamantwekzeuge GmbH and Co
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 Ernst Winter and Sohn Diamantwekzeuge GmbH and Co filed Critical Ernst Winter and Sohn Diamantwekzeuge GmbH and Co
Publication of EP0309660A1 publication Critical patent/EP0309660A1/fr
Application granted granted Critical
Publication of EP0309660B1 publication Critical patent/EP0309660B1/fr
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
    • B28D1/12—Saw-blades or saw-discs specially adapted for working stone
    • B28D1/127—Straight, i.e. flat, saw blades; strap saw blades

Definitions

  • the invention relates to a gang saw blade, which carries spaced teeth on its straight lower edge.
  • Gate saw blades of this type are used, for example, to cut travertine or to saw marble. Due to the geological location, only strongly acidic water is often available for cooling. This leads to a relatively rapid and severe corrosion of the steel blades of the frame saw if the teeth are designed as segments which consist, for example, of a bronze bond which contains a diamond grit, since the different metals cause galvanic currents under the influence of the acidic cooling water. This corrosion also occurs at the base of the individual teeth or tooth segments, if these are soldered directly onto the steel saw blade (US-A-1 866 356).
  • gang saw blades are known in which the supports of the toothed segments are connected to the saw blade by screws or rivets.
  • the teeth are interchangeable. However, they have no protection against corrosion, which is caused on the one hand by a galvanic flow if the teeth are made of a different metal than the saw blade and on the other hand by the binding of water in the gaps between the saw blade and the beams.
  • US-A-1 866 356 provides for the attachment of beams to the blade by sawing. These are designed as segments containing diamond-containing cutting bodies, which are provided on their side facing the saw blade with a V-shaped incision with which they are to be plugged onto the blade. The segments are then attached by means of a solder, which fills the two gaps between the segments and the sheet, which are located on both sides of the sheet.
  • a solder which fills the two gaps between the segments and the sheet, which are located on both sides of the sheet.
  • the object of the invention is to provide adequate protection against corrosion of the frame saw blade below the teeth, without having to accept the disadvantages associated with known arrangements.
  • a gang saw blade is provided for this, as forms the subject of claim 1.
  • no additional corrosion protection measures need to be taken, and the new arrangement also does not require the sheet to be drilled into or the steel sheet to be strongly heated in order to secure the teeth. Even if the blade is subjected to severe corrosion after a longer period of use, this has no effect on the hold of the teeth.
  • the arrangement according to the invention also has the advantage that the use of supports made of a corrosion-resistant metal sheet such as V4A steel as intermediate members between shorter diamond-containing teeth with a bronze bond, for example and a saw blade made of commercially available steel prevents the occurrence of galvanic currents and that the distribution of the solder for fastening the carriers prevents corrosion by the entry of cooling water in gaps between the carrier and the blade.
  • the particularly high-quality diamond-containing cutting segments or teeth can therefore be used even under the most unfavorable operating conditions, such as the use of relatively acidic cooling water, until they are fully used, without the risk of loosening of teeth as a result of corrosion.
  • the carrier can be provided with a solder layer on its three inner sides before it is attached to the sheet.
  • several carriers can first be soldered in a row at a distance from one another on the comb or saddle of the blade.
  • the individual teeth can then be soldered onto the carriers, a carrier being able to carry one or more teeth.
  • the U-shaped carrier does not have to be coated with a solder on all three inner sides from the outset.
  • it has rather been shown that it is sufficient to arrange a solder layer only on the inside of the central web for fastening the carrier to a sheet, because when the solder is heated, it flows down on the two inner sides of the carrier and then all gaps between the carrier and fills in the sheet.
  • the gang saw blades 1 shown in the drawing have a blade 2 which is made of sheet steel.
  • U-shaped support plates 3 are provided as intermediate carriers in cross section, which are made of V4A steel. These carrier plates 3 are provided in the middle section on their outside with a solder 5 for fastening the teeth 4, which are made of bronze or another material containing diamond or CBN.
  • a solder layer 6 is arranged on the inside of the U-shaped carrier plates 3 for fastening the carrier plates 3 to the steel sheet 2. It is possible to fasten the individual teeth 4 on the associated carrier plates 3 after heating them at the same time as fastening the carrier plates 3 to a steel sheet 2 or to connect these three parts together. Such can be carried out without great effort and without a higher thermal load on the sheet 2 and has the advantage that no additional protective measures need to be taken for a firm hold of the teeth 4 on the sheet 2 in its subsequent corrosion.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Connection Of Plates (AREA)

Claims (2)

1. Lame de scie alternative à cadre qui porte des dents (4) sur son arête inférieure continue droite sur la face extérieure de supports (3) en forme de U qui sont plus longs que les dents (4) placées sur eux et qui sont fixés sur la lame (2) par un alliage d'apport (6) en étant espacés l'un de l'autre, caractérisée en ce qu'un support (3) est constitué par une tôle métallique résistante à la corrosion courbée en forme de U qui porte, sur sa face intérieure, une couche d'alliage d'apport (6) qui couvre toutes les trois faces intérieures du support (3) pour empêcher une corrosion en fissures.
2. Lame de scie alternative à cadre selon la revendication 1, caractérisée en ce que le support (3) porte une couche d'alliage d'apport (5) sur la face extérieure de sa traverse centrale.
EP88110633A 1987-10-02 1988-07-04 Lame de scie alternative à cadre Expired - Lifetime EP0309660B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3733299 1987-10-02
DE19873733299 DE3733299A1 (de) 1987-10-02 1987-10-02 Gattersaegeblatt

Publications (2)

Publication Number Publication Date
EP0309660A1 EP0309660A1 (fr) 1989-04-05
EP0309660B1 true EP0309660B1 (fr) 1991-05-22

Family

ID=6337449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88110633A Expired - Lifetime EP0309660B1 (fr) 1987-10-02 1988-07-04 Lame de scie alternative à cadre

Country Status (4)

Country Link
EP (1) EP0309660B1 (fr)
AR (1) AR244589A1 (fr)
DE (2) DE3733299A1 (fr)
ES (1) ES2022541B3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020025143A1 (fr) * 2018-08-03 2020-02-06 Husqvarna Ab Lames de scie améliorées pour agencements de scie à lames multiples
KR102517753B1 (ko) * 2020-12-23 2023-04-06 이화다이아몬드공업 주식회사 갱쏘용 절삭공구

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8327628U1 (de) * 1984-02-09 Bickmeyer, Jochen, 3014 Laatzen Bandsägeblatt zur Steinbearbeitung
GB191300106A (en) * 1913-01-02 1913-11-20 George Anderson And Company 19 Improvements in and relating to the Method of Attaching Abrasive Materials such as Carborundum or the like to Band Saws.
US1866356A (en) * 1930-12-01 1932-07-05 Homer V Jones Saw tooth
DE730442C (de) * 1937-01-15 1943-01-12 Ludwig Lacher Dipl Ing Saege mit schwenkbaren Zaehnen
FR1093114A (fr) * 1954-02-10 1955-05-02 Perfectionnements aux lames de scies
US2969053A (en) * 1959-03-06 1961-01-24 Wentzel Carbide Tool Company I Teeth for reciprocating stone cutting saw blade
US3580041A (en) * 1968-02-05 1971-05-25 Universal Alufolien Verfahren Die assembly
DE2803850A1 (de) * 1978-01-30 1979-08-02 Steinbearbeitungs Maschinenfab Werkzeug fuer eine saegevorrichtung, insbesondere zum saegen von stein

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
GB-A- 106 / A.D. 1913 *

Also Published As

Publication number Publication date
ES2022541B3 (es) 1991-12-01
AR244589A1 (es) 1993-11-30
EP0309660A1 (fr) 1989-04-05
DE3862915D1 (de) 1991-06-27
DE3733299A1 (de) 1989-04-20

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