WO2023248293A1 - 電機子ユニット、およびリニアモータ - Google Patents
電機子ユニット、およびリニアモータ Download PDFInfo
- Publication number
- WO2023248293A1 WO2023248293A1 PCT/JP2022/024535 JP2022024535W WO2023248293A1 WO 2023248293 A1 WO2023248293 A1 WO 2023248293A1 JP 2022024535 W JP2022024535 W JP 2022024535W WO 2023248293 A1 WO2023248293 A1 WO 2023248293A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- armature
- gasket
- armature unit
- machine table
- thickness
- 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.)
- Ceased
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K41/00—Propulsion systems in which a rigid body is moved along a path due to dynamo-electric interaction between the body and a magnetic field travelling along the path
- H02K41/02—Linear motors; Sectional motors
- H02K41/03—Synchronous motors; Motors moving step by step; Reluctance motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Definitions
- the present disclosure relates to an armature unit and a linear motor.
- Patent Document 1 a linear motor that drives a mechanical table is known (for example, Patent Document 1).
- Linear motors that drive mechanical tables are used in a variety of environments. For example, when a linear motor is used in a machine tool, there is a risk that cutting fluid or chips may enter the armature, causing a malfunction of the armature.
- the armature unit comprises an armature and a gasket having at least one rubber layer and a metal layer that can be placed between the machine table and the armature.
- An armature gasket includes at least two rubber layers and a metal layer sandwiched between the at least two rubber layers.
- FIG. 2 is a side view showing an example of a gasket having a rubber layer and a metal layer.
- FIG. 3 is a cross-sectional view showing an example of an armature unit to which a mechanical table is fixed.
- FIG. 3 is a sectional view showing an example of an armature unit including a cooling plate.
- FIG. 3 is a cross-sectional view showing an example of an armature unit to which a mechanical table is fixed.
- the armature unit is an armature unit for a linear motor.
- the linear motor drives, for example, a machine tool or a machine table of a measuring device.
- FIG. 1 is a perspective view showing an example of an armature unit.
- the armature unit 1 comprises an armature 2 and a gasket 3 with at least one rubber layer that can be arranged between the machine table and the armature 2.
- the armature 2 is a member having a winding that generates an induced electromotive force through relative movement with a magnetic field.
- the armature 2 has, for example, a rectangular parallelepiped shape in which each surface is rectangular, and includes a winding inside.
- the armature 2 moves along a stator (not shown) that generates a magnetic field.
- a machine table is a member on which objects are placed.
- a machine table is used in a machine tool, a workpiece is placed on the machine table as an object.
- a mechanical table is used in a measuring device, an object to be measured is placed on the mechanical table.
- the machine table is formed, for example, in the shape of a rectangular parallelepiped, each face of which is a rectangle.
- the gasket 3 is a sealing material that provides airtightness and liquidtightness to the structure.
- the gasket 3 is formed into the same rectangular shape as the upper surface of the armature 2, for example.
- the gasket 3 may have at least two rubber layers and a metal layer sandwiched between the at least two rubber layers.
- the rubber layer is a layer of a polymer compound that has elasticity.
- the polymer compound is, for example, an elastomer.
- the rubber layer is a thin sheet-like member.
- the metal layer is composed of a thin plate-shaped metal.
- the metal is, for example, stainless steel.
- FIG. 2 is a side view showing an example of a gasket 3 having a rubber layer and a metal layer.
- the gasket 3 includes two rubber layers 31 and a metal layer 32 sandwiched between the two rubber layers 31.
- the rubber layer 31 and the metal layer 32 are bonded to each other with, for example, an adhesive.
- the thickness dg of the gasket 3 is 0.1 [mm] or more and 5 [mm] or less. Moreover, the thickness dr of one rubber layer 31 is 0.01 [mm] or more and 0.1 [mm] or less. Note that when the thickness dr of one rubber layer 31 is, for example, 0.1 [mm], the thickness dg of the gasket 3 is thicker than at least 0.2 [mm], and the thickness of the gasket 3 described above is greater than 0.2 [mm]. It is natural that the thickness becomes thicker than the lower limit value of dg of 0.1.
- the thickness dm of the metal layer 32 is 0.2 [mm]
- the thickness dr of one rubber layer 31 is 0.025 [mm]
- the total thickness is 0.25 [mm]. It is.
- FIG. 3 is a sectional view showing an example of the armature unit 1 to which a mechanical table is fixed.
- Gasket 3 is sandwiched between armature 2 and machine table T. This can prevent foreign matter such as cutting fluid from entering between the armature 2 and the gasket 3. That is, the armature 2 can be made waterproof by the metal touch of the metal layer 32 included in the gasket 3.
- the machine table T and the armature 2 may be fixed to each other using, for example, a known clamp member.
- the armature 2 can be made waterproof.
- the liquid sealant also has the properties of an adhesive, it becomes difficult to remove the machine table T from the armature 2.
- the liquid sealant is highly likely to cause uneven coating, and in this case, the armature 2 cannot be sufficiently waterproofed. Therefore, for example, if holes are formed on the surface of the armature 2, there is a risk that cutting fluid or the like may enter through the holes.
- the armature unit 1 of the present disclosure includes an armature 2 and a gasket 3 having at least one rubber layer 31 and a metal layer 32 that can be placed between the machine table T and the armature 2. Therefore, since the gasket 3 is not a sealing material, the machine table T can be easily removed from the armature 2. In other words, the armature unit 1 of the present disclosure has high maintainability. Further, problems such as uneven coating during manufacturing do not occur.
- the armature unit 1 of the present disclosure includes the rubber layer 31, it has high heat insulation properties. That is, it is possible to prevent the heat generated by the armature 2 from being transmitted to the machine table T. Therefore, deformation of the mechanical table T due to heat can be prevented. As a result, when the machine table T is used in a machine tool, the machining accuracy of the workpiece can be improved. Furthermore, when the mechanical table T is used in a measuring device, the measurement accuracy of the object to be measured can be improved.
- a cooling plate C provided with a cooling pipe between the armature 2 and the machine table T, it is possible to prevent the heat generated in the armature 2 from being transmitted to the machine table T (see Fig. 4).
- the cooling plate C is thick and the armature unit 1 becomes large.
- a chiller is required to cool the cooling water, which increases the size of the machine. Chillers also consume large amounts of energy. As a result, carbon dioxide emissions will increase.
- the gasket 3 of the armature unit 1 is thin, the armature unit 1 can be made smaller.
- the thickness dr of one rubber layer 31 is 0.01 [mm] or more and 0.1 [mm] or less. Further, the thickness of the gasket is 0.1 [mm] or more and 5 [mm] or less.
- the joint rigidity between the armature 2 and the machine table T can be increased.
- the mechanical table T is less likely to vibrate, and the positioning accuracy of the mechanical table T is increased.
- the armature unit 1 of the present disclosure does not use a chiller. Therefore, energy consumption can be suppressed.
- the greatest advantage of the armature unit 1 of the present disclosure is that it can simultaneously achieve the above-described effects of waterproofness, ease of maintenance, ease of manufacture, heat insulation, miniaturization, and suppression of energy consumption.
- FIG. 5 is a perspective view showing an example of the armature unit 1.
- a screw hole 21 for a bolt is formed in the upper surface of the armature 2.
- the table is fixed to the armature 2 using this screw hole 21.
- the gasket 3 is formed with a plurality of bolt holes 33 at positions corresponding to the screw holes 21 for inserting bolts therethrough.
- the bolt hole 33 is formed, for example, by laser processing.
- FIG. 6 is a sectional view showing an example of the armature unit 1 to which the machine table T is fixed.
- Gasket 3 is sandwiched between armature 2 and machine table T.
- the bolt B is inserted through the hole in the table and the bolt hole 33 in the gasket 3, and then tightened into the screw hole 21 in the armature 2.
- This can prevent liquid from entering between the machine table T and the armature 2.
- liquid can be prevented from entering the screw holes 21 of the armature 2.
- a plate P equipped with an O-ring R can be placed around the bolt B (see FIG. 7). In this case, it is possible to prevent liquid from entering between the machine table T and the plate P and between the plate P and the armature 2. However, in this case, the armature unit 1 becomes larger by the thickness of the plate P. Furthermore, the plate P cannot prevent the heat generated by the armature 2 from being transmitted to the machine table T.
- the gasket 3 of the armature unit 1 is thin, the armature unit 1 can be made smaller. Further, since the gasket 3 has the rubber layer 31, it can exhibit a heat insulating effect.
- the gasket 3 of the embodiment described above does not have unevenness, the gasket 3 may have unevenness at a position surrounding the bolt hole 33.
- FIG. 8 is a perspective view showing an example of the armature unit 1.
- An uneven portion 34 is formed around the bolt hole 33.
- the uneven portion 34 is formed by, for example, a press machine. That is, by press working, the metal layer 32 of the gasket 3 is plastically deformed, and the uneven portion 34 is formed.
- the uneven portion 34 is formed to surround one bolt hole 33. That is, a plurality of uneven portions 34 are formed in the gasket 3 so as to surround each bolt hole 33.
- FIGS. 9A and 9B are cross-sectional views showing an example of the armature unit 1 to which the mechanical table T is fixed.
- FIG. 9A shows the state before bolt B is tightened.
- FIG. 9B shows the state after the bolt B has been tightened.
- the gasket 3 has a first surface and a second surface on the back side of the first surface.
- the surface in contact with the machine table T is the first surface.
- the surface in contact with the armature 2 is the second surface.
- a convex portion 341 is formed on the first surface, and a concave portion 342 is formed at a position corresponding to the convex portion 341 on the second surface. Further, as described above, the recess 342 and the projection 341 are formed to surround one bolt hole 33.
- the top portion of the convex portion 341 receives a pressing force from the lower surface of the machine table T.
- This increases the pressure acting on the contact surface between the machine table T and the gasket 3 and the pressure acting between the armature 2 and the gasket 3.
- the gasket 3 of the present disclosure differs from ordinary gaskets in that it also includes a metal layer 32 in addition to the rubber layer 31. Therefore, the metal touch bonding force due to the metal layer 32 increases, and the contact pressure can be further increased as described above. As a result, it is possible to stably prevent liquid from entering between the machine table T and the armature 2.
- a small space is formed between the recess 342 of the gasket 3 and the upper surface of the armature 2. This space contains air. Therefore, an air layer is formed between the armature 2 and the gasket 3, and the heat insulation effect of the gasket 3 can be enhanced.
- the uneven portion 34 is formed to surround one bolt hole 33.
- the uneven portion 34 may be formed to surround the plurality of bolt holes 33.
- FIG. 10 is a diagram showing an example of a gasket 3 in which an uneven portion 34 is formed to surround a plurality of bolt holes 33.
- an uneven portion 34 is formed so as to surround all the bolt holes 33.
- the lower surface of the machine table T only needs to be in contact with the uneven portion 34 of the gasket 3.
- the region inside the portion that contacts the uneven portion 34 does not necessarily need to be in contact with the gasket 3 . Therefore, as shown in FIG. 11, the thickness of the region located inside the portion in contact with the uneven portion 34 can be made thinner than the thickness of the region in contact with the uneven portion 34. Thereby, the weight of the machine table T can be reduced.
- FIGS. 12 and 13 are diagrams showing other examples of the gasket 3 in which a concavo-convex portion 34 is formed to surround a plurality of bolt holes 33.
- an uneven portion 34 is formed to surround a plurality of bolt holes 33 arranged in a direction perpendicular to the longitudinal direction of the gasket 3.
- an uneven portion 34 is formed so as to surround a plurality of bolt holes 33 arranged in the longitudinal direction of the gasket 3.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Gasket Seals (AREA)
- Linear Motors (AREA)
- Motor Or Generator Frames (AREA)
Abstract
Description
2 電機子
21 ねじ穴
3 ガスケット
31 ゴム層
32 金属層
33 ボルト用孔
34 凹凸部
341 凸部
342 凹部
T 機械テーブル
B ボルト
C 冷却プレート
P プレート
R Oリング
Claims (7)
- 電機子と、
機械テーブルと前記電機子との間に配置可能な少なくとも1つのゴム層および金属層を有するガスケットと、
を備える電機子ユニット。 - 前記ガスケットは、少なくとも2つのゴム層と、前記少なくとも2つのゴム層によって挟まれる金属層とを有する請求項1に記載の電機子ユニット。
- 前記少なくとも1つのゴム層の厚みは、0.01[mm]以上、0.1[mm]以下である請求項1または2に記載の電機子ユニット。
- 前記ガスケットの厚みは、0.1[mm]以上、5[mm]以下である請求項1~3のいずれか1項に記載の電機子ユニット。
- 前記ガスケットには、ボルト用孔が形成されている請求項1~4のいずれか1項に記載の電機子ユニット。
- 前記ガスケットは第1の面と前記第1の面の裏側に第2の面とを有し、前記第1の面には凸部が形成され、前記第2の面の前記凸部に対応する位置には凹部が形成され、前記凹部および前記凸部は、1または複数の前記ボルト用孔を囲むように形成されている請求項5に記載の電機子ユニット。
- 請求項1~6のいずれか1項に記載の電機子ユニットを備えるリニアモータ。
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2022556525A JP7280449B1 (ja) | 2022-06-20 | 2022-06-20 | 電機子ユニット、およびリニアモータ |
| PCT/JP2022/024535 WO2023248293A1 (ja) | 2022-06-20 | 2022-06-20 | 電機子ユニット、およびリニアモータ |
| CN202280097011.9A CN119366091A (zh) | 2022-06-20 | 2022-06-20 | 电枢单元以及线性马达 |
| DE112022006850.7T DE112022006850T5 (de) | 2022-06-20 | 2022-06-20 | Ankereinheit und linearmotor |
| TW112120609A TWI923909B (zh) | 2022-06-20 | 2023-06-02 | 電樞單元及線性馬達 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2022/024535 WO2023248293A1 (ja) | 2022-06-20 | 2022-06-20 | 電機子ユニット、およびリニアモータ |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2023248293A1 true WO2023248293A1 (ja) | 2023-12-28 |
| WO2023248293A9 WO2023248293A9 (ja) | 2024-10-10 |
Family
ID=86395873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2022/024535 Ceased WO2023248293A1 (ja) | 2022-06-20 | 2022-06-20 | 電機子ユニット、およびリニアモータ |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP7280449B1 (ja) |
| CN (1) | CN119366091A (ja) |
| DE (1) | DE112022006850T5 (ja) |
| WO (1) | WO2023248293A1 (ja) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08226549A (ja) * | 1995-02-20 | 1996-09-03 | Fanuc Ltd | 直動モータにおけるシール装置 |
| JP2004088981A (ja) * | 2001-09-28 | 2004-03-18 | Thk Co Ltd | 駆動案内装置 |
| JP2021057975A (ja) * | 2019-09-30 | 2021-04-08 | ファナック株式会社 | モータ |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0522636U (ja) * | 1991-09-02 | 1993-03-23 | 東京フアブリツク工業株式会社 | 防波堤用ケーソンの止水連結装置 |
| JP2000092813A (ja) * | 1998-09-11 | 2000-03-31 | Minolta Co Ltd | リニアモータ駆動装置 |
-
2022
- 2022-06-20 WO PCT/JP2022/024535 patent/WO2023248293A1/ja not_active Ceased
- 2022-06-20 JP JP2022556525A patent/JP7280449B1/ja active Active
- 2022-06-20 CN CN202280097011.9A patent/CN119366091A/zh active Pending
- 2022-06-20 DE DE112022006850.7T patent/DE112022006850T5/de active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08226549A (ja) * | 1995-02-20 | 1996-09-03 | Fanuc Ltd | 直動モータにおけるシール装置 |
| JP2004088981A (ja) * | 2001-09-28 | 2004-03-18 | Thk Co Ltd | 駆動案内装置 |
| JP2021057975A (ja) * | 2019-09-30 | 2021-04-08 | ファナック株式会社 | モータ |
Also Published As
| Publication number | Publication date |
|---|---|
| TW202414969A (zh) | 2024-04-01 |
| DE112022006850T5 (de) | 2025-01-16 |
| CN119366091A (zh) | 2025-01-24 |
| JPWO2023248293A1 (ja) | 2023-12-28 |
| WO2023248293A9 (ja) | 2024-10-10 |
| JP7280449B1 (ja) | 2023-05-23 |
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