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1. WO2020090277 - SPINDLE DEVICE HAVING BUILT-IN MOTOR

Publication Number WO/2020/090277
Publication Date 07.05.2020
International Application No. PCT/JP2019/036849
International Filing Date 19.09.2019
IPC
B23B 19/02 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
BTURNING; BORING
19Headstocks; Equivalent parts of any machine tools
02Working-spindles; Features relating thereto, e.g. supporting arrangements
B23Q 11/00 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
QDETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL, CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
11Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
B24B 41/04 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
41Component parts of grinding machines or devices, such as frames, beds, carriages or headstocks
04Headstocks; Working-spindles; Features relating thereto
B24B 47/12 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
47Drives or gearings for grinding machines or devices; Equipment therefor
10for rotating or reciprocating working-spindles carrying grinding wheels or workpieces
12by mechanical gearing or electric power
B24B 55/06 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
24GRINDING; POLISHING
BMACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
55Safety 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
06Dust extraction equipment on grinding or polishing machines
F16C 33/80 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
CSHAFTS; 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
33Parts of bearings; Special methods for making bearings or parts thereof
72Sealings
76of ball or roller bearings
80Labyrinth sealings
Applicants
  • 日本精工株式会社 NSK LTD. [JP]/[JP]
Inventors
  • 松永 恭平 MATSUNAGA Kyohei
  • 小栗 翔一郎 OGURI Shoichiro
Agents
  • 特許業務法人栄光特許事務所 EIKOH PATENT FIRM, P.C.
Priority Data
2018-20565231.10.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SPINDLE DEVICE HAVING BUILT-IN MOTOR
(FR) DISPOSITIF DE BROCHE COMPORTANT UN MOTEUR INTÉGRÉ
(JA) モータビルトイン方式のスピンドル装置
Abstract
(EN)
A spindle device (10) having a built-in motor, wherein a flinger (40) is fixed to one end side of a rotating shaft (11) and a labyrinth seal (44) is formed between the flinger (40) and a housing H. The housing H has: at least one air purge hole (72) that connects to outside the spindle device (10); and an annular groove (71) into which the air purge hole (72) opens and which faces the labyrinth seal (44). As a result, water-resistance performance can be improved, high-temperature air from heat generated by the motor can be prevented from passing through front bearings, and premature damage to bearings can be prevented.
(FR)
L'invention concerne un dispositif de broche (10) comportant un moteur intégré, un déflecteur (40) étant fixé à un côté d'extrémité d'un arbre tournant (11) et un joint à labyrinthe (44) étant formé entre le déflecteur (40) et un boîtier H. Le boîtier H comprend : au moins un trou de purge d'air (72) qui se raccorde à l'extérieur du dispositif de broche (10) ; et une rainure annulaire (71) dans laquelle s'ouvre le trou de purge d'air (72) et qui fait face au joint à labyrinthe (44). Par conséquent, les performances de résistance à l'eau peuvent être améliorées, l'air à haute température provenant de la chaleur générée par le moteur peut être empêché de passer à travers des paliers avant, et un endommagement prématuré des paliers peut être empêché.
(JA)
モータビルトイン方式のスピンドル装置(10)において、回転軸(11)の一端側にフリンガー(40)を固定して、ハウジングHとの間でラビリンスシール(44)を形成する。ハウジングHは、スピンドル装置(10)の外部とを連通する少なくとも1つのエアパージ孔(72)と、該エアパージ孔(72)が開口し、ラビリンスシール(44)に臨む環状溝(71)と、を有する。これにより、防水性能の向上を図ると共に、モータの発熱による高温空気が前側軸受を通ることを抑制して、軸受の早期損傷を防止することができる。
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