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1. (WO2019043293) SPINDLE BEARING COOLING ARRANGEMENT IN AN ABRADING APPARATUS
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Pub. No.: WO/2019/043293 International Application No.: PCT/FI2018/050611
Publication Date: 07.03.2019 International Filing Date: 30.08.2018
IPC:
B24B 55/04 (2006.01) ,B24B 55/02 (2006.01) ,B24B 23/02 (2006.01) ,B25F 5/00 (2006.01) ,F16C 37/00 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
B
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
55
Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
04
Protective covers for the grinding wheel
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
B
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
55
Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
02
Equipment for cooling the grinding surfaces, e.g. devices for feeding coolant
B PERFORMING OPERATIONS; TRANSPORTING
24
GRINDING; POLISHING
B
MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
23
Portable grinding machines, e.g. hand-guided; Accessories therefor
02
with rotating grinding tools; Accessories therefor
B PERFORMING OPERATIONS; TRANSPORTING
25
HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; HANDLES FOR HAND IMPLEMENTS; WORKSHOP EQUIPMENT; MANIPULATORS
F
COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
5
Details or components of portable power-driven tools not particularly related to the operations performed and not otherwise provided for
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
C
SHAFTS; FLEXIBLE SHAFTS; MECHANICAL MEANS FOR TRANSMITTING MOVEMENT IN A FLEXIBLE SHEATHING; ELEMENTS OF CRANKSHAFT MECHANISMS; PIVOTS; PIVOTAL CONNECTIONS; ROTARY ENGINEERING ELEMENTS OTHER THAN GEARING, COUPLING, CLUTCH OR BRAKE ELEMENTS; BEARINGS
37
Cooling of bearings
Applicants:
MIRKA LTD [FI/FI]; Pensalavägen 210 66850 JEPUA, FI
Inventors:
FINNÄS, Stig; FI
NORDSTRÖM, Caj; FI
BÄCK, Simon; FI
Agent:
BERGGREN OY; Visiokatu 1 33720 TAMPERE, FI
Priority Data:
2017578701.09.2017FI
Title (EN) SPINDLE BEARING COOLING ARRANGEMENT IN AN ABRADING APPARATUS
(FR) SYSTÈME DE REFROIDISSEMENT DE PALIER DE BROCHE DANS UN APPAREIL D'ABRASION
Abstract:
(EN) An arrangement for cooling a spindle bearing or bearings (3) of an abrading apparatus with rotating abrading members is disclosed, premised on arranging in the housing (2) of the abrading apparatus conduits (1) which extend from the spindle bearing chamber wall (6) of the housing (2) to the inner suction chamber wall (8) of the housing (2). Via such conduits (1), hot air may be expelled from the spindle bearing chamber (5) of the housing (2) as an overpressure (O) in front of a protruding balancer element (16) of a rotating shaft balancer (10) is discharged from a spindle bearing chamber (5) via a conduit (1) into a suction chamber (7), and cool air may be conveyed from the suction chamber (7) into the spindle bearing chamber (5) as an underpressure (U) behind the protruding balancer element (16) draws in air from the suction chamber (7) via a conduit (1) to the spindle bearing chamber (5).
(FR) L'invention concerne un système destiné à refroidir un ou des paliers de broche (3) d'un appareil d'abrasion doté d'éléments d'abrasion tournants, reposant sur l’agencement de conduits (1) dans le logement (2) de l’appareil d'abrasion qui s'étendent de la paroi de chambre de palier de broche (6) du logement (2) à la paroi de chambre d'aspiration interne (8) du logement (2). Par l'intermédiaire de tels conduits (1), de l'air chaud peut être expulsé de la chambre de palier de broche (5) du logement lorsqu’un excès de pression (O) devant un élément d’équilibrage saillant (16) d'un dispositif d’équilibrage d'arbre rotatif (10) est évacué d'une chambre de palier de broche (5) et introduit dans une chambre d'aspiration (7) par l'intermédiaire d'un conduit (1), et de l'air frais peut être acheminé depuis la chambre d'aspiration (7) dans la chambre de palier de broche (5) lorsqu’une pression réduite (U) derrière l'élément d’équilibrage saillant (16) aspire l'air de la chambre d'aspiration (7) par l'intermédiaire d'un conduit (1) vers la chambre de palier de broche (5).
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)