PL159790B1 - Double-rong grinding wheel made of extra hard material with resin binder - Google Patents

Abstract

A dual-ring grinding wheel made of superhard materials with resin binder, composed of a casing with, fixed on it, a working plate which contains in its mass superhard grain materials and fillers such as graphite, silicon carbide, electro corundum, sodium fluoride, boron carbide or 5-micron nickel powder in resitol binder, characterized in that each of the two rings of the working plate consists of superhard grain material to an amount of 8-25 percent of the working ring volume, filling agent to an amount of 15-45 of working ring volume, resitol binder to an amount of 15-45 percent of working ring volume and liquid phenol formaldehyde resol resin AW to an amount of 10-25 percent of working ring volume, where the amounts of the filling agent and the superhard grain material must not exceed 50 percent of the total working ring volume.<IMAGE>

Description

^ zedMotem ⁱⁿ ynalazku jeat wheel dwupierbieniowa of superhard materials ° ^s p ^o iwie foo ^ ^^ cznym Ictóra applies liczrych branches prae ^ ALU, Jeb raa for sharpening and lapping tool ^ę cutting tools of ^the ęglików spiekanyb, grinding ^ equipmen ⁱⁿ raraMcznych and ίβιτγ'ίι ^ ^d οΗ traz of sharpening (Jocierania tool ^ę akrarających gear with balls 8Z ^s bkotn ^ącyc h (o ral ^ crossing ^surface, Las ^near the steel h ^ CH ^^ brow and żaroodpornyb.

These grinding wheels ^are manufactured in many shapes, types and sizes, and matched to a given machining process. They consist of a body serving for fixing ^tools mason ra spindle machine tools ^{in the} holder, and overlay napraaowanej working on the body. Itoób card with rings overlay performances ^y is working with the grain of super passive, Ictórym is diamond or CBN embedded with fillers in the binder ^foo wicznym. The frame of the frame is made of aluminum or thermosetting tuft.

Known are single-ring working overlays made of ^pR L opiate No. U8 3 ¹ ^ pt. TOpraób ^O processing mab passive Mamentowej consisting of Mamentowej powder, a binder rezrtolwwego fillers such as ^g RAFIT bzemu carbide, corundum, fluoride sod ^ ^b ol carbide powder or nickel five micron.

The grinding wheel according to German Patent No. 2 931 695 jeat ^d wupierbieniowa ^who Reg nalcładka work is fixed permanently brpuaie. Każcly ring in naMadce bncentrację has a different and a lot ^near Oso grain raliuującego. Stre ^f fine-grained and consists of Miku * podetrei a gradual grain size. To s ^j in joiwa additional abrasive grains.

Another known double flank grinding wheel made of superhard materials also has a concentration ^and size of grinding grains ^{different in the working pad.} For connecting rapertwardego grains and fillers used ntwolakową type ^foo latter to form schools of fenoloroπnaldhhydowe ^g, SpMwo it ^{has a} tendence ^j E to gassing during u ^ artzania biernicy to 175 ° C. This occurs rakutek ° ydbyrania Me ^part ESCI volatile ammonia and phenol contained in the WIC ^{Y y,} ct causes POSTAR ńatłl u ^re knięó on powierzbni tool ^that works. Moreover, such a tool is brittle and shattered. The equal hardness of the oil ^{in the} grinding shoe causes a cold reduction in the scratch efficiency.

159 790

The aim of the invention is to eliminate these disadvantages by introducing a resol-type resin binder in fenolotormadeeyydowego ^p ostaci liquid ^AW time as groszkowanej as resitol and variation of hardness in the binder naltładce szliflującty.

The grinding wheel according to the invention consists of a tare body, on this path the robraz pad is mounted. Each ^Y of the two ^p ierścieni overlay working slcłada the grains in an amount rapertwardego Θ - 25% tajętości ^p and ^e rścienia ^working fillers such as graphite, silicon carbide, elektrotarund fluoride, radium, boron carbide powder or nickel ^p-micron in ięcio ilośto ¹⁵ to5% by volume of the ring and the binder in an amount rezitolowego ⁱ⁵ ~ 45% ^of bi ^ę toast pierśtaenia and tywicy liquid] AW rezolowty a phenol in an amount of 11.0-25% objętotai ring. The amounts of burners and rapert hard grains must not exceed 50% of the total volume of the working ring.

The grinding wheel according to the invention meets the requirements of grinding łębokościowego ^g. Today ^ę hand the fact that the ^{shaft has a} d ^p ierścienie overlay working ^Mo that contain varied composition layers in from the grinding ^g lędem concentration and grain size of super hardness ^of time are olwa ^p.

Grinding in the overlay comprising a liquid resol resin and powdered AW as resitol ^p Ep as ^the cure temperature ^and 75 ° C not owoduje ^p ^ is zowania taining a cap ralifującą ^b ez ^EP Knieć and chipping. And thanks to the diversity and tancentracji grutotoi grain and binder twardtyci otozyrnano tool with a wide range of property and better adapt this operation the cake with a variety of tools wytanatych ^g atimków trudnootoabianych carbide and steel.

Subject; invention is illustrated ^p rzykaadowo to the drawings on taórym FIG. ¹ is a ^COG ciernicę in przelcroju longitudinal FIG. 2 - toiernicę in view ^{g ORy,} Figure 3 - toiernicę in the form of a metal sleeve centering prepared for tapΓa8roania outer ring, and Fig 4 - a rim with two pressed rings.

Example I. ^p ierścienia embodiment of the outer cap rotoczej applied mass ^ę raierną comprising grains of superhard ^g ru ^b spears 160/125 microns and a concentration of 5 vol% ² ^ orói ring utyto carbide as a filler in an amount of ² track 0% toj ^ ^p otoi ierraienia, and a binder Tywica AW liquid in an amount of ^5% v ^ ^p Orai ierścienia and resitol in an amount of 40 vol% ^ otoi working ring. Żytacę resitole ^powder as resitol obtained previously in an electric dryer by heating the liquid żywioy AW at 6 ⁰ ° C with -80 todatkiern ^desired iron oxide, to complete the inner ring Pri ^y are particles of super grutości about ⁶ 3 / 5O microns concentration of 12 , 5% obesity and ring filler, 23% ring obesity and radium fluoride ^{in the} amount of ⁴ »5% of the ring weight ^and 5% of the ring weight and 5% of the ring and resitol in the amount of 45 % toj ^ę toast ring.

^In foimie metal ¹ (provided tarpus ² ttaczywa fenolotommaldehydowego. The tarputae ² rapresowano rakładkę roboraą the utyciu praay tydraulicznej, at the peace ^of above, wherein rajpiera rasypano mass ^ę raierną on pierśc ttings view 3 1 pressed at tośnieniern ¹ t / cm &lt; insure the centering sleeve ⁴ powierzctoię cut ring 5. the internal ^wool was then removed and the sleeve 4 are filled rantrującą mass ^ę raierną inner ring 5. ^After the pressing tou pierśieta ³ ra and ⁵ press tydraulicznej an increasing ^temperature foraie ^{i6 1} to 0 C ^within about ¹⁰ minutes released naciak presses ^y. the removed ^from the wheel for ^my totwradzano ⁱⁿ susrarce power at gradually increasing ethyl ^ to 175 ° ^C over ^{6 g} odzin. tytaras rarzędzie ptotono toróbce mechanicraej finishing.

Example II. The outer ring of the working overlay was made of abrasive cloth containing super-hard grain with a thickness of 200/160 micrometers and a concentration of 12.5% of the ring volume. The filler was 5-micron nickel powder in the amount of 32.5% of the ring volume, and the binder was liquid AW resin in the amount of 15% of the ring volume and resitol in the amount of 40% of the working ring volume. To make the inner ring, 100/80 micrometers super-hard grain with a concentration of 8% of the ring volume was used as

159 790 used a filler carbide Rr ^ aemu in an amount of 27.5% by volume of the ring and Aodu fluoride in an amount of 4.5% by volume ^ę toast ierścienia ^p. As the binder resin used ⁱⁿ the liquid AW iloźd 1.8% tajętości ring and the resin in ^p oataci resitole in an amount of ⁴² vol% of ^E is ^COG ierścienia ^p.

A grinding wheel made in analogy to the canine ^{y p} y ^d branches I.

Claims (1)

Patent claim Grinding dwupierbieniowa of superhard materials t binder resin consisting of ktrpusu, which permanently is fixed cap operating comprising in its mass a grain su ^p ertwarde with fillers such as graphite, silicon carbide, elektrobrunii fluoride STDU carbide btru or ^p roszek nickel 5 micron in a binder rezitolowym, characterized in that the bżdego of ^d wu ring cap robttzej in superhard grain in an amount θ- ^ ^ ίϊ5 vol% ^ę tobi working ring filler in an amount of 15-45 $ TBJ ^ę toast traz ring binder rezbobwe in an amount of 15-45% by volume ^ę toast ring and liquid resin ⁱⁿ a sol re words fenolortmmaldehydowa in an amount of 10-25% by volume of the ring, wherein the amount of filler and grain super-hard, can not ^p rzekraczaó 50% of the volume of the working ring.