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1. WO2020090278 - SPINDLE DEVICE WITH BUILT-IN MOTOR

Publication Number WO/2020/090278
Publication Date 07.05.2020
International Application No. PCT/JP2019/036850
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
F16C 19/16 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
19Bearings with rolling contact, for exclusively rotary movement
02with bearing balls essentially of the same size in one or more circular rows
14for both radial and axial load
16with a single row of balls
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
  • 小栗 翔一郎 OGURI Shoichiro
  • 松永 恭平 MATSUNAGA Kyohei
Agents
  • 特許業務法人栄光特許事務所 EIKOH PATENT FIRM, P.C.
Priority Data
2018-20565331.10.2018JP
Publication Language Japanese (JA)
Filing Language Japanese (JA)
Designated States
Title
(EN) SPINDLE DEVICE WITH BUILT-IN MOTOR
(FR) DISPOSITIF DE BROCHE MUNI DE 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) with a built-in motor, wherein a flinger (40) is fixed to the front end of a rotational shaft (11) to form a labyrinth seal (44) with a housing H. The housing H has an opening (71) that allows air from outside the spindle device (10) to enter a rear space (45) formed further to the rear than a rear bearing (60). Due to this configuration, it is possible to improve machining accuracy and reduce heat loss in the motor even with a relatively small spindle in which it is difficult to provide an air seal path.
(FR)
L'invention concerne un dispositif de broche (10) muni d'un moteur intégré, un déflecteur (40) étant fixé à l'extrémité avant d'un arbre rotatif (11) afin de former un joint à labyrinthe (44) avec un logement H. Le logement H possède une ouverture (71) qui permet à l'air provenant de l'extérieur du dispositif de broche (10) de pénétrer dans un espace arrière (45) formé plus à l'arrière qu'un palier arrière (60). Grâce à cette configuration, il est possible d'améliorer la précision d'usinage et de réduire la perte de chaleur dans le moteur même avec une broche relativement petite dans laquelle il est difficile de fournir un trajet d'étanchéité à l'air.
(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)の前端部側にフリンガー(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、後側軸受(60)より後方に形成された後方空間(45)に、スピンドル装置(10)の外部からのエアを流入させる開口孔(71)を有する。これにより、エアシール経路を設置することが難しい、比較的小型のスピンドルにおいても、加工精度が向上し、且つ、モータの熱損失を低減できる。
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