US1982710A - Reenforcement of high speed abrasive wheels - Google Patents

Reenforcement of high speed abrasive wheels Download PDF

Info

Publication number
US1982710A
US1982710A US366034A US36603429A US1982710A US 1982710 A US1982710 A US 1982710A US 366034 A US366034 A US 366034A US 36603429 A US36603429 A US 36603429A US 1982710 A US1982710 A US 1982710A
Authority
US
United States
Prior art keywords
wheel
reenforcement
abrasive
metal
lateral
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
US366034A
Other languages
English (en)
Inventor
Frank J Tone
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.)
Unifrax 1 LLC
Original Assignee
Carborundum 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 Carborundum Co filed Critical Carborundum Co
Priority to US366034A priority Critical patent/US1982710A/en
Priority to DED68187D priority patent/DE627004C/de
Priority claimed from GB21325/34A external-priority patent/GB441406A/en
Application granted granted Critical
Publication of US1982710A publication Critical patent/US1982710A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
    • B24D5/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting only by their periphery; Bushings or mountings therefor
    • B24D5/02—Wheels in one piece
    • B24D5/04—Wheels in one piece with reinforcing means

Definitions

  • This invention relates to the lateral reenforcement of abrasive wheels and particularly to lat: eral reenforcements in which the reenforcement can be worn away automatically during the grinding process or may be easily removed bythe occasional application of a tool while the wheel is in operation.
  • Another type of reenforcement for abrasive Wheels has been described in 00- pending U. S. application Serial No. 313,087, filed October 17, 1928, and also in co-pending application Serial No. 336,557, filed January 31, 1929 (these two applications 313,087 and 336,557 have been replaced by Serial No. 445,367 filed April 18, 1930).
  • the present application differs from these c'o-pending applications principally in the method of applying the lateral reenforcements to the wheels and in the manner of removal of the said reenforcements.
  • Lateral reenforcements are intended particularly for wheels which are used at speedsgreater than the usual peripheral speeds of 5500 to 6500 feet per minute, as for example, 9000 feet per minute. It has been found that the diameter of a rapidly revolving abrasive wheel becomes greater than the diameter of that same wheel at rest. This actual increase in diameter is due to centrifugal force and is consequently a function of the square of the linear velocity of the wheel for a given radius.
  • an abrasive wheel to be-protected is provided with lateral reenforcements, which is I accomplished by applying to one or both faces of the wheel, a reenforcement which elongates much less under a stress than the abrasive wheel does under the same stress.
  • the latter of the above mentioned co-pending applications describes a method of reenforcement of abrasive wheels by cementing metal strengthening members to each side of the wheel by means of a cement of such thickness and characteristics that together with the metal it forms a substantial reenforcing member which prevents the increase in the diameter of the wheel beyond the elastic limit of the wheel under ordinary use.
  • Figure 1 represents a side view of an abrasive wheel which has been reenforced by the application ofa spray of liquid metal at high pressure; and v v Figure 2 is a section of Fig. 1 taken on the line 2-2.
  • an abrasive wheel may be sprayed with copper, brass or other suitable material in a thin coating. If desired this coating may be thickened by electrodeposition of such metals as copper, nickel, chromium, etc., the strength of which can be further increased by annealing or .burnishing or both.
  • the material is applied by means of a metalspraying gun.
  • Metals which can be obtained in wire form and which can be readily melted by means of an oxyacetylene flame are used.
  • the molten metal is driven at such a pressure into the pores of the abrasive wheel that it forms a very firmly adhering coat.
  • Suchcoatings strengthen the wheels and make it possible to run them at increased speed, the increase in speed greatly depending, as would be expected, on the metal used, its thickness, etc.
  • a sufficient coating may be applied in about five minutes on each face of the abrasive wheel. Care is exercised that the least possible heat shock is given to the abrasive material. In fact it is better to warm the wheel up slowly before spraying and cool slowly afterwards.
  • a metal reenforcement is shown covering part of the lateral surface of an abrasive wheel.
  • the portion 4 of the lateral surface of the abrasive wheel is shown with the metal reenforcement removed.
  • the abrasive wheel is shown as mounted on a shaft 5 with the aid of a lead bushing 8.
  • the reenforcement may be removed by a tool while the abrasive wheel is in operation.
  • the reenforcement. may be automatically removed in the process of operation of the wheel without the use of a dressing tool.
  • the sprayed metal reenforcement can be applied in a very short time as compared with the amount of time required to apply cementing materials.
  • a unitary abrasive wheel having a lateral reenforcement rigidly rooted in a side of the wheel, said reenforcement consisting of metal which fills the pores .of the wheel adjacent the lateral surface and extends over said surface, and which wears away in the ordinary process. of peripheral grinding by reason of the integral connection of the metal with the side of thewheel.
  • a method of laterally reenforcing a unitary abrasive wheel which comprises depositing metal in the pores adjacent a lateral surface and on the lateral surface to form a continuous layer of metal rooted in the abrasive.
  • step 3 in the method of providing lateral reenforcements for unitary abrasive wheels used for peripheral grinding, which step comprises spraying one or both sides of the unitary wheel with initially molten metal driven under pressure into the superficial pores, and building up the lateral reenforcement by further spraying.
  • steps in the method of providing lateral I reenforcement for unitary abrasive wheels used for peripheral grinding comprise warming the unitary abrasive wheel slowly, spraying one or both sides of the wheel with initially molten metal driven under pressure into the superficial pores, building up the lateral reenforcement by further spraying, and slowly cooling the wheel.
  • steps in the method ofproviding lateral reenforcement's for unitary abrasive wheels used for peripheral grinding which steps comprise spraying one or both sides of the unitary wheel with finely divided metal and thickening the deposit b y electrodeposition of metal on the sprayed coating.
  • the method of providing lateral reenforcements for unitary abrasive wheels used for peripheral grinding comprises spraying one or both sides of the unitary wheel with finely divided metal, thickening the deposit by electrodeposition of metal on the sprayed coating,
  • a unitary abrasive wheel having a lateral reenforcement for one or both sides of the wheel, said reenforcement comprising a layer ofv metal rooted in the superficial pores of the reenforced surface by spraying molten metal against the abrasive surface, and an additional layer of metal electro-chemicall'y deposited on the sprayed coat- 8.
  • a unitary abrasive wheel including a porous body of bonded abrasive grain and a lateral reenforcement in adherent contact with a side surface of the body of the wheel, said reenforcement comprising a layer of metal driven into the pores of said body so as to wet or give the effect of wetting the surface thereof.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
US366034A 1929-05-25 1929-05-25 Reenforcement of high speed abrasive wheels Expired - Lifetime US1982710A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US366034A US1982710A (en) 1929-05-25 1929-05-25 Reenforcement of high speed abrasive wheels
DED68187D DE627004C (de) 1929-05-25 1934-06-02 Schleifscheibe mit seitlichen Verstaerkungen auf einer oder beiden Seiten, die fest mit der Scheibe verbunden sind

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US366034A US1982710A (en) 1929-05-25 1929-05-25 Reenforcement of high speed abrasive wheels
DED68187D DE627004C (de) 1929-05-25 1934-06-02 Schleifscheibe mit seitlichen Verstaerkungen auf einer oder beiden Seiten, die fest mit der Scheibe verbunden sind
GB21325/34A GB441406A (en) 1934-06-02 1934-07-20 Improvements in or relating to the reinforcement of abrasive wheels

Publications (1)

Publication Number Publication Date
US1982710A true US1982710A (en) 1934-12-04

Family

ID=27209897

Family Applications (1)

Application Number Title Priority Date Filing Date
US366034A Expired - Lifetime US1982710A (en) 1929-05-25 1929-05-25 Reenforcement of high speed abrasive wheels

Country Status (2)

Country Link
US (1) US1982710A (de)
DE (1) DE627004C (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430390A (en) * 1965-12-17 1969-03-04 Whittaker Corp Cutting machines and tools for composite materials
US3482355A (en) * 1967-01-31 1969-12-09 Federal Mogul Corp Grinding wheel construction
US3686800A (en) * 1969-12-22 1972-08-29 Itt Abrasive cutting-off wheels having metal coated sides

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2634154A1 (de) * 1976-04-13 1977-10-27 Diamant Boart Sa Topfschleifscheibe
DE3138163A1 (de) * 1981-09-25 1983-04-14 Guilleaume-Werk W. u. Dr. Ing. A. Guilleaume GmbH & Co KG, 5300 Bonn Schleifscheibe
CH676942A5 (de) * 1988-08-24 1991-03-28 Fritz Studer Maschinenfabrik A

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3430390A (en) * 1965-12-17 1969-03-04 Whittaker Corp Cutting machines and tools for composite materials
US3482355A (en) * 1967-01-31 1969-12-09 Federal Mogul Corp Grinding wheel construction
US3686800A (en) * 1969-12-22 1972-08-29 Itt Abrasive cutting-off wheels having metal coated sides

Also Published As

Publication number Publication date
DE627004C (de) 1936-03-06

Similar Documents

Publication Publication Date Title
US5127924A (en) Hard particle coated grinding wheel
IE37578B1 (en) Metal coating of diamonds
US1982710A (en) Reenforcement of high speed abrasive wheels
US2077959A (en) Fan blade
US3295941A (en) Diamond reinforced coatings and method of preparing same
US3071490A (en) Bond between a base metal and a sprayed-on metal layer
WO2007060984A1 (ja) レジンボンド超砥粒ホイールおよびその製造方法
US2420359A (en) Method of making dies
US3287862A (en) Abrasive articles and method of making abrasive articles
US2115209A (en) Abrasive wheel and method of using same
GB1071277A (en) Improvements in or relating to methods of making tools for removing material from workpieces and to tools so produced
US2479079A (en) Diamond abrasive wheel
US3551125A (en) Method of forming a grinding wheel
CN101012560A (zh) 用感应加热熔涂合金技术强化火车钢轨和车轮表面方法
US2353404A (en) Abrasive article
US2082150A (en) Reenforced abrasive member and method of making the same
CN109468571A (zh) 一种拨叉磨损面同时熔涂增材强化方法
EP0396493B1 (de) Verbindung von Reibmaterial mit beschichtetem Grundkörper
US2028183A (en) Abrasive wheel and method of making the same
US3115401A (en) Abrasive tool
US2498982A (en) Abrasive type cutting element and the manufacture thereof
US4977986A (en) Bonding friction material to plated substrates
US2290631A (en) Abrasive tool and method of making same
US2270258A (en) Abrasive tool and method of making same
US2038727A (en) Grinding wheel