CN109149901B - Linear shaft direct-drive structure convenient for heat dissipation - Google Patents
Linear shaft direct-drive structure convenient for heat dissipation Download PDFInfo
- Publication number
- CN109149901B CN109149901B CN201811170116.4A CN201811170116A CN109149901B CN 109149901 B CN109149901 B CN 109149901B CN 201811170116 A CN201811170116 A CN 201811170116A CN 109149901 B CN109149901 B CN 109149901B
- Authority
- CN
- China
- Prior art keywords
- linear
- heat dissipation
- linear guide
- guide rail
- drive structure
- 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.)
- Active
Links
- 230000017525 heat dissipation Effects 0.000 title claims abstract description 30
- 230000033001 locomotion Effects 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims abstract description 4
- 239000000110 cooling liquid Substances 0.000 claims abstract description 4
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, 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
- B23Q11/00—Accessories 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Electromagnetism (AREA)
- Mechanical Engineering (AREA)
- Machine Tool Units (AREA)
- Motor Or Generator Cooling System (AREA)
- Linear Motors (AREA)
Abstract
The invention discloses a linear shaft direct-drive structure convenient for heat dissipation. The purpose of the invention is that: the temperature control scheme of the linear motor movement structure can effectively control the temperature rise of main heating components such as the linear guide rail and the body movement component, and therefore the machine tool precision is improved. A linear shaft direct-drive structure convenient for heat dissipation is characterized in that a linear motor stator plate is arranged on a body fixing part on a machine tool, linear guide rails are arranged on two sides of the linear motor stator plate, a body moving part is fixed on a mounting sliding block of each linear guide rail, a bearing base plate is arranged between the body fixing part and a linear motor rotor plate, and a plurality of hollowed heat dissipation meshes are formed in the middle of the bearing base plate; on the surface of the machine tool casting body, two linear guide rail installation parts are provided with a single or a plurality of U-shaped grooves, copper tubes for circulating cooling liquid are buried in the grooves, and the copper tubes are connected with a precise circulating cooling system.
Description
Technical Field
The invention relates to a linear shaft direct-drive unit, in particular to a linear motor motion structure with efficient heat dissipation.
Background
Along with the continuous improvement of the performance requirements of high-speed and high-precision machine tools in the market, the traditional linear shaft driving mode of driving the ball screw by the rotary servo motor is gradually replaced by direct driving of the linear motor. The direct drive transmission shortens the length of a feeding transmission chain of the machine tool to zero, and has the characteristics of no abrasion, high-speed response, high transmission rigidity, high acceleration, high transmission efficiency and the like.
When the linear motor is used for driving: the conduction of the rotor plate after heating and how to control the heat balance state of the rotor plate so as to control the temperature rise of the installation part, reduce the thermal deformation of the installation part and reduce the influence of the temperature rise on the precision; the traveling wave magnetic field generated after the rotor plate is electrified and the stator permanent magnet magnetic field form a strong acting force, and the strong acting force acts on the corresponding bearing linear guide rail, so that the friction force of the guide rail is increased, more heat is generated under a high-speed motion state, the guide rail is deformed due to temperature rise change, and the change of the machine tool precision is directly influenced. Therefore, under the condition that the heating component cannot be removed, heat is effectively conducted out to control the temperature rise change of the heating component, and the method is an effective method for controlling the precision of the machine tool.
Disclosure of Invention
The purpose of the invention is that: the temperature control scheme of the linear motor movement structure can effectively control the temperature rise of main heating components such as the linear guide rail and the body movement component, and therefore the machine tool precision is improved.
Linear shaft directly drives structure convenient to heat dissipation installs linear motor stator board on the body fixed part on the lathe, arranges linear guide in linear motor stator board both sides, and fixed body motion part, characterized by on linear guide's the installation slider:
a bearing base plate is arranged between the body fixing part and the linear motor rotor plate, and a plurality of hollowed-out heat dissipation grids are arranged in the middle of the bearing base plate; on the surface of the machine tool casting body, two linear guide rail installation parts are provided with a single or a plurality of U-shaped grooves, copper tubes for circulating cooling liquid are buried in the grooves, and the copper tubes are connected with a precise circulating cooling system.
According to the linear shaft direct-drive structure convenient for heat dissipation, the heat dissipation grid of the bearing base plate is a plurality of rectangular hollowed holes distributed in a rectangular array, and the bearing base plate is provided with penetrating heat dissipation meshes along the movement direction; the bearing backing plate is connected with the linear motor rotor plate and the body moving part through bolts.
According to the linear shaft direct-drive structure convenient for heat dissipation, circular penetrating heat dissipation meshes are uniformly distributed on two end faces of the bearing backing plate along the movement direction.
According to the linear shaft direct-drive structure convenient for heat dissipation, screw holes are distributed at the top positions of the four sides of the bearing base plate and the hollow holes of the rectangular building.
According to the linear shaft direct-drive structure convenient for heat dissipation, two mounting sliding blocks are mounted on linear guide rails on two sides of the linear motor stator plate.
According to the linear shaft direct-drive structure convenient for heat dissipation, the flatness of the linear guide rail mounting base surface is not lower than 0.008/1000mm, the linearity of the linear guide rail is not lower than 0.005/1000mm, the parallelism of the linear guide rails on two sides is not lower than 0.008/1000mm, the upper surfaces of the mounting sliding blocks on the linear guide rail are positioned in the same plane, and the coplanar flatness of the upper surfaces of all the mounting sliding blocks is within 0.008/1000mm.
According to the linear shaft direct-drive structure convenient for heat dissipation, two U-shaped grooves are formed in the installation position of the linear guide rail, and two U-shaped grooves are respectively distributed on two sides of the bottom of the linear guide rail.
The technical scheme of the invention has the following characteristics:
in the aspect of type selection calculation of the linear motor, the thrust safety coefficient of the linear motor is set to be 120-130%, so that the problem of large heat productivity caused by overhigh power of the linear motor is solved.
2 on the basis of researching the temperature control of the linear shaft guide rail, the device lists the precise numerical requirements of the mounting base surface of the linear shaft guide rail. Meanwhile, the device definitely adopts the linear motor rotor plate for circulating cooling, and a special bearing base plate with hollowed-out grids serving as radiating holes is arranged below the linear guide rail, and a cooling pipe network structure is distributed below the linear guide rail. The structure design can effectively conduct out the heat generated by the heating component and is used for controlling the temperature rise change of the heating component, so that the precision of the machine tool is improved.
Drawings
Fig. 1 is a schematic perspective view of the present invention.
Fig. 2 is a schematic cross-sectional view of the present invention.
Fig. 3 is a partial cross-sectional view of the linear guide cooling structure of the present invention.
In the accompanying drawings: 1. a body fixing member; 2. a linear motor stator plate; 3. a linear motor rotor plate; 4. a bearing backing plate; 5. a linear guide rail; 6. a body movement member; 7. copper pipe.
Detailed Description
The invention uses various unique novel temperature control technical methods, such as: the linear shaft direct-drive movement temperature control method for determining the linear motor selection safety coefficient, the machining and assembly precision requirement, the reliable cooling of the linear motor rotor plate and the linear guide rail and the like effectively controls the temperature rise of main heating parts such as the linear guide rail, the body moving parts and the like, thereby improving the precision of the machine tool. The cooling device for the inner structure of the linear motor and the rotor plate of the linear motor belongs to the conventional technology and is not repeated.
The heating sources of the general straight-line shaft direct-drive structure mainly comprise two parts: the coil of the rotor plate of the linear motor generates heat and the linear guide rail generates heat by friction. The linear motor stator plate is arranged on the upper body fixing part 1 of the machine tool, and linear guide rails are symmetrically arranged on the left side and the right side of the linear motor stator plate. In order to effectively dissipate heat from the heat source, the following technical means are adopted.
1. When the linear motor is selected, a trapezoid speed mode or a triangle speed mode can be adopted according to the length of the movement stroke, when the linear motor parameter is selected, the thrust is not lower than 120-130% of safety coefficient, and the allowance is reserved for selecting the linear motor, so that the problem of large heat productivity caused by overhigh power of the linear motor is solved.
2. Form and position tolerance of the linear guide rail. The flatness of the contact surface at the bottom of the linear guide rail mounting base surface is not lower than 0.008/1000mm, the straightness of the linear guide rail is not lower than 0.005/1000mm, and the parallelism of the linear guide rails at two sides is not lower than 0.008/1000mm. The upper surfaces of the installation sliding blocks on the linear guide rail are positioned in the same plane, and the coplanar flatness of the upper surfaces of all the installation sliding blocks is controlled within 0.008/1000mm.
As shown in fig. 1-3, the linear motor and the linear guide rail are all installed in a vertical plane. The following heat dissipation schemes are also applicable to horizontal planes and other angular mounting modes.
In the method, a body moving part 6 is fixed on a mounting slide block of the linear guide rail, and a bearing base plate 4 is mounted between the body moving part of the machine tool and the linear motor rotor plate 3. The middle part of the bearing backing plate is provided with a plurality of hollowed-out heat dissipation grids, and the heat dissipation grids of the bearing backing plate preferably adopt a plurality of rectangular hollowed-out holes distributed in a 4*5 rectangular array. The two end surfaces of the bearing backing plate along the movement direction are uniformly distributed with round penetrating radiating meshes. The bearing backing plate is connected with the linear motor rotor plate and the body moving part 6 through bolt connection. Screw holes are distributed at the vertexes of the hollow holes of the four sides and the rectangular building of the bearing base plate.
On the premise of meeting the structural rigidity, through the special heat dissipation grid structure of the bearing pad, the heat dissipation area can be increased through the grid, the contact area between the movable plate and the bearing pad can be reduced, and the heat conduction is reduced; meanwhile, with the high-speed movement of the linear motor rotor plate 3, through penetrating through the radiating mesh holes of the bearing base plate along the movement direction, the heat of the joint part of the bearing base plate and the linear motor rotor plate is effectively taken away by air flow caused by the high-speed movement, so that the temperature control effect is realized. The traditional existing linear motor rotor plate generally adopts a circulating cooling mode to control the temperature, a cooling medium is filled in the linear motor rotor plate, heat is taken away through circulation of a precise water cooler, and the temperature control effect is achieved. The cooling device of the linear motor rotor plate belongs to the prior art structure, so that the description is omitted.
According to the invention, two U-shaped grooves are processed at the mounting positions of the linear guide rail 5 on the surface of the machine tool casting body at two sides of the linear guide rail. The copper tube 7 with large heat conductivity is buried in the groove, cooling liquid is filled in the tube, and heat near the guide rail is taken away by a precise circulating cooling system such as a precise water cooling machine of the model CWA36PTS-380V, so that the effective control of temperature rise is realized. The cooling structures are distributed below the two linear guide rails. Copper tubes below the two linear guide rails are connected in series and are connected into the same precise circulating cooling system together.
The above embodiments are merely illustrative of the preferred embodiments of the present invention, and are not intended to limit the spirit and scope of the present invention, and those skilled in the art should not be able to make any changes or modifications to the technical solution of the present invention without departing from the design concept of the present invention.
Claims (7)
1. Linear shaft direct-drive structure convenient to heat dissipation installs linear motor stator board (2) on body fixed part (1) on the lathe, arranges linear guide (5) in linear motor stator board both sides, fixed body motion part (6) on linear guide's the installation slider, its characterized in that:
a bearing base plate (4) is arranged between the body fixing part (1) and the linear motor rotor plate (3), a plurality of hollowed-out radiating grids are arranged in the middle of the bearing base plate, and the bearing base plate is provided with penetrating radiating meshes along the moving direction; on the surface of the machine tool casting body, a single or a plurality of U-shaped grooves are formed in the installation positions of the two linear guide rails (5), copper tubes (7) for circulating cooling liquid are buried in the grooves, and the copper tubes (7) are connected with a precise circulating cooling system.
2. The linear shaft direct-drive structure facilitating heat dissipation according to claim 1, wherein: the heat dissipation grid of the bearing base plate (4) is a plurality of rectangular building hollow holes distributed in a rectangular array, and the bearing base plate is connected with the linear motor rotor plate (3) and the body moving part (6) through bolt connection.
3. The linear shaft direct-drive structure facilitating heat dissipation according to claim 1, wherein: round penetrating radiating meshes are uniformly distributed on two end faces of the bearing backing plate along the moving direction.
4. The linear shaft direct-drive structure facilitating heat dissipation according to claim 2, wherein: screw holes are distributed at the top positions of the hollow holes of the four sides and the rectangular building of the bearing base plate (4).
5. The linear shaft direct-drive structure facilitating heat dissipation according to claim 1, wherein: two mounting sliding blocks are mounted on linear guide rails (5) on two sides of the linear motor stator plate.
6. The linear shaft direct-drive structure facilitating heat dissipation according to claim 1, wherein: the flatness of the installation base surface of the linear guide rail (5) is not lower than 0.008/1000mm, the straightness of the linear guide rail (5) is not lower than 0.005/1000mm, the parallelism of the linear guide rails on two sides is not lower than 0.008/1000mm, the upper surfaces of the installation sliding blocks on the linear guide rail are positioned in the same plane, and the coplanar flatness of the upper surfaces of all the installation sliding blocks is within 0.008/1000mm.
7. The linear shaft direct-drive structure facilitating heat dissipation according to claim 1, wherein: the installation part of the linear guide rail (5) is provided with two U-shaped grooves, and two sides of the bottom of the linear guide rail are respectively provided with one U-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811170116.4A CN109149901B (en) | 2018-10-09 | 2018-10-09 | Linear shaft direct-drive structure convenient for heat dissipation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811170116.4A CN109149901B (en) | 2018-10-09 | 2018-10-09 | Linear shaft direct-drive structure convenient for heat dissipation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109149901A CN109149901A (en) | 2019-01-04 |
| CN109149901B true CN109149901B (en) | 2023-11-28 |
Family
ID=64810909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811170116.4A Active CN109149901B (en) | 2018-10-09 | 2018-10-09 | Linear shaft direct-drive structure convenient for heat dissipation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109149901B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110587323A (en) * | 2019-10-10 | 2019-12-20 | 浙江日发航空数字装备有限责任公司 | Linear motor driving device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071967A (en) * | 2006-05-10 | 2007-11-14 | 大银微系统股份有限公司 | Linear motor radiating structure |
| CN101132137A (en) * | 2007-08-27 | 2008-02-27 | 清华大学 | Linear motor radiator |
| JP2008167575A (en) * | 2006-12-28 | 2008-07-17 | Hiwin Mikrosystem Corp | Stator of direct-drive liquid cooling motor |
| CN201931147U (en) * | 2010-12-28 | 2011-08-17 | 宁波君灵模具技术有限公司 | Auxiliary cooling device for machining |
| CN202679153U (en) * | 2012-05-06 | 2013-01-16 | 衢州学院 | Heat pipe radiator used for linear motor |
| DE102015112795A1 (en) * | 2014-08-04 | 2016-02-18 | Abb Technology Ag | Busbar connector and switchgear with conductor rail connector |
| CN208835978U (en) * | 2018-10-09 | 2019-05-07 | 山东威达重工股份有限公司 | A kind of linear axis direct drive structure convenient for heat dissipation |
-
2018
- 2018-10-09 CN CN201811170116.4A patent/CN109149901B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101071967A (en) * | 2006-05-10 | 2007-11-14 | 大银微系统股份有限公司 | Linear motor radiating structure |
| JP2008167575A (en) * | 2006-12-28 | 2008-07-17 | Hiwin Mikrosystem Corp | Stator of direct-drive liquid cooling motor |
| CN101132137A (en) * | 2007-08-27 | 2008-02-27 | 清华大学 | Linear motor radiator |
| CN201931147U (en) * | 2010-12-28 | 2011-08-17 | 宁波君灵模具技术有限公司 | Auxiliary cooling device for machining |
| CN202679153U (en) * | 2012-05-06 | 2013-01-16 | 衢州学院 | Heat pipe radiator used for linear motor |
| DE102015112795A1 (en) * | 2014-08-04 | 2016-02-18 | Abb Technology Ag | Busbar connector and switchgear with conductor rail connector |
| CN208835978U (en) * | 2018-10-09 | 2019-05-07 | 山东威达重工股份有限公司 | A kind of linear axis direct drive structure convenient for heat dissipation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109149901A (en) | 2019-01-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105099122B (en) | A kind of moving-magnetic type long stroke ultraprecise straight-line motion mechanism | |
| TW201705655A (en) | Rectilinear motion linear module and position control servo system provided with module | |
| TWI669183B (en) | Slide apparatus | |
| CN105479337A (en) | Numerical control vertical type plane forming grinding machine | |
| CN109149901B (en) | Linear shaft direct-drive structure convenient for heat dissipation | |
| CN112372319A (en) | Linear motor driven movable beam gantry numerical control machine tool for counteracting magnetic attraction | |
| JPH10263960A (en) | Machine tool | |
| CN102891585B (en) | Single-side moving magnet linear motor | |
| KR100538303B1 (en) | XY table | |
| CN204810117U (en) | Bimodulus alternating movement linear electric motor module | |
| CN208835978U (en) | A kind of linear axis direct drive structure convenient for heat dissipation | |
| CN106300875A (en) | Cluster linear electric motors actuator | |
| CN101652916B (en) | Drive guide device | |
| CN102761189B (en) | Direct-current motor with flow guiding devices | |
| CN110012644B (en) | Movable auxiliary fan system for data center | |
| CN216403103U (en) | Electromagnetic drive circulation line | |
| CN214291926U (en) | Linear motor driven movable beam gantry numerical control machine tool for counteracting magnetic attraction | |
| CN215580883U (en) | DCDC converter with high-efficient heat dissipation shell | |
| CN104953787A (en) | Double-module alternate moving linear motor module | |
| CN204361872U (en) | For the double-flanged end linear electric motors transmission device of logistics sorting arrangement | |
| CN217701375U (en) | Slide structure with cooling function | |
| CN219254984U (en) | Constant temperature cooling structure for machine tool guide rail | |
| CN116765639B (en) | High-precision five-axis laser processing machine tool | |
| CN113162361A (en) | Integrated linear motor module and use method thereof | |
| CN113601246B (en) | Vertical and horizontal combined machining center driven by linear motor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240403 Address after: 1999 Beixin West Road, Jinghe Street, Tengzhou City, Zaozhuang City, Shandong Province (within Weida Heavy Industry Institute) Patentee after: Shandong Weida Jinggong Intelligent Equipment Co.,Ltd. Country or region after: China Address before: No.1999, beixinxi Road, Tengzhou City, Zaozhuang City, Shandong Province Patentee before: SHANDONG WEIDA HEAVY INDUSTRIES Co.,Ltd. Country or region before: China |