CN217344701U - Gantry machining center with electric spindle thermal compensation function - Google Patents
Gantry machining center with electric spindle thermal compensation function Download PDFInfo
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- CN217344701U CN217344701U CN202220881945.9U CN202220881945U CN217344701U CN 217344701 U CN217344701 U CN 217344701U CN 202220881945 U CN202220881945 U CN 202220881945U CN 217344701 U CN217344701 U CN 217344701U
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Abstract
The utility model discloses a gantry machining center with electric spindle thermal compensation function, which comprises an electric spindle; a base; the portal frame is fixedly arranged on the base; the electric spindle fixing seat is movably arranged on the portal frame; the electric main shaft is fixedly arranged on the electric main shaft fixing seat; the first cooling channel of the electric spindle is arranged between the shell and the stator fixing shell, and cooling oil gas is introduced into the front bearing cavity through one end of the first cooling channel and then flows back through the front bearing return channel; cooling oil gas is introduced into the rear bearing cavity through the rear bearing cooling channel and then flows back through the rear bearing return channel; a temperature detection sensor; the oil-gas circulation heat dissipation assembly is respectively connected to the inlet of the first cooling channel, the inlet of the rear bearing cooling channel, the outlet of the front bearing backflow channel and the outlet of the rear bearing backflow channel; and the temperature detection sensor transmits the temperature signal to the industrial personal computer.
Description
Technical Field
The utility model belongs to the technical field of longmen machining center, specifically speaking relate to a longmen machining center with electricity main shaft thermal compensation function.
Background
The high speed and high precision of machine tools has become one of the main development directions of current and future manufacturing equipment, the machine tool mechanical error accounts for the decreasing proportion of the total error due to the increasing manufacturing and assembling precision of the machine tool, and the error caused by heat has become the main error source of the precision machine tool, because the research on the machine tool thermal error compensation technology has very high value.
China starts to research on related aspects later, and due to the fact that the manufacturing industry center of the world gradually shifts to China in recent years, China also puts forward a shift from a manufacturing big country to a real strong manufacturing country, and the problem of how to improve the overall product quality and precision of the manufacturing industry becomes very urgent. The traditional method mainly depends on controlling the production and manufacturing environment, improving the rigidity of the machine tool in the design of manufacturing equipment, and improving the manufacturing and assembling precision, thereby finally achieving the effect of improving the manufacturing precision of the machine tool. However, the conventional method has a limited effect on overcoming the thermal deformation error of the machine tool, has serious limitations, and cannot fundamentally solve the requirement of increasing the machining precision of the machine tool. Through research and observation of technicians, the stator heat productivity of the electric spindle is relatively obvious, and in addition, because the traditional electric spindle lacks cooling of the rear bearing, the rear bearing is also subjected to temperature rise and aggregation in the high-speed operation process of the mandrel, and the precision of a machining center is also obviously influenced.
Disclosure of Invention
The utility model aims at providing a longmen machining center with electricity main shaft thermal compensation function, its technical problem who exists in the meaning solution background art.
In order to solve the technical problem, the purpose of the utility model is to realize like this:
a gantry machining center with electric spindle thermal compensation function comprises
An electric spindle;
a base;
the portal frame is fixedly arranged on the base;
the electric spindle fixing seat is movably arranged on the portal frame; the electric spindle is fixedly arranged on the electric spindle fixing seat; the electric spindle comprises a mandrel, a front bearing group, a front bearing cavity, a front end cover, a shell, a stator fixing shell, a rotor, a rear bearing group, a rear bearing cavity, a first cooling channel, a rear bearing cooling channel, a front bearing backflow channel and a rear bearing backflow channel, wherein the rotor is fixedly arranged on the mandrel, the front bearing group is positioned in the front bearing cavity, the rear bearing group is positioned in the rear bearing cavity, the first cooling channel is arranged between the shell and the stator fixing shell, cooling oil gas is introduced into the front bearing cavity through one end of the first cooling channel and then flows back through the front bearing backflow channel; cooling oil gas is introduced into the rear bearing cavity through the rear bearing cooling channel and then flows back through the rear bearing return channel;
the temperature detection sensor is at least arranged at the outlet of the rear bearing return channel and the outlet of the front bearing return channel;
the oil-gas circulation heat dissipation assembly is respectively connected to the inlet of the first cooling channel, the inlet of the rear bearing cooling channel, the outlet of the front bearing backflow channel and the outlet of the rear bearing backflow channel;
and the temperature detection sensor transmits the temperature signal to the industrial personal computer.
On the basis of the above scheme and as a preferable scheme of the scheme: the stator fixing shell is provided with a plurality of rib plates along the axial direction of the electric spindle, and the rib plates are arranged in a staggered mode and enclose the S-shaped first cooling channel.
On the basis of the above scheme and as a preferable scheme of the scheme: the stator fixing shell is provided with a partition plate along the axial direction of the electric spindle, and the partition plate divides the first cooling channel into two first sub-cooling channels; each first sub-cooling channel is provided with a first inlet, a first outlet, a second inlet and a second outlet.
On the basis of the above scheme and as a preferable scheme of the scheme: the first inlet and the second inlet are communicated with an outlet of the oil-gas circulation heat dissipation assembly through a pipeline, and the first outlet and the second outlet are communicated with the front bearing cavity and then return to the inlet of the oil-gas circulation heat dissipation assembly through the front bearing return channel.
On the basis of the above scheme and as a preferable scheme of the scheme: and a baffle plate is arranged at the corner of the turning part of the first sub-cooling channel.
On the basis of the above scheme and as a preferable scheme of the scheme: the included angle between the baffle plate and the rib plate is 45 degrees.
Compared with the prior art, the utility model outstanding and profitable technological effect is: the stator and the front bearing group are cooled through the first cooling channel, and the rear bearing group is cooled through the rear bearing cooling channel, so that the key heating position of the electric spindle is cooled; in addition, through temperature sensor's setting, detect the temperature of cooling oil gas to acquire the temperature variation of cooling oil gas in real time, thereby provide temperature data to the industrial computer, and then oil gas circulation radiator unit changes the flow of cooling oil gas, takes away more heats from this, keeps electric main shaft key position temperature stable in the threshold value within range of settlement.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of an electric spindle configuration;
FIG. 3 is a schematic view of a first cooling passage configuration;
FIG. 4 is a schematic view of a baffle arrangement.
Detailed Description
In order to make the purpose, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the drawings in the embodiments, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. All other embodiments obtained by a person skilled in the art without making any inventive step, based on the given embodiments, fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "upper", "lower", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
In the description of the present application, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated.
A gantry machining center with electric spindle thermal compensation function comprises
An electric spindle 10;
a base 20; the working platform 50 is movably arranged on the base 20 and is driven to move along the Y-axis direction by a Y-axis servo transmission system;
the gantry 30, the gantry 30 is fixedly arranged on the base 20;
the electric spindle fixing seat 40 is movably arranged on the portal frame 30; specifically, the electric spindle fixing seat 40 is fixedly arranged at the output end of a Z-axis servo transmission system, and the Z-axis servo transmission system is fixedly arranged at the output end of an X-axis servo transmission system, so that the electric spindle is driven to move back and forth in the X direction, the Y direction and the Z direction, and the control of the movement amount in the X direction, the Y direction and the Z direction is realized through a machining center control system. In this embodiment, specifically, the electric spindle 10 is fixedly disposed on the electric spindle fixing seat 40; the electric spindle 10 comprises a mandrel 11, a front bearing group 12, a front bearing cavity 13, a front end cover 14, a housing 15, a stator 16, a stator fixing shell 17, a rotor 18, a rear bearing positioning ring 19, a front shaft sleeve 112, a rear shaft sleeve 113, a stator insulating sleeve 1112, a rear bearing group 111, a rear bearing cavity 110, a first cooling channel 1101, a rear bearing cooling channel 1102, a front bearing backflow channel 1103 and a rear bearing backflow channel 1104, wherein the rotor 18 is fixedly arranged on the mandrel 11, the front bearing group 12 is positioned in the front bearing cavity 13, the rear bearing group 111 is positioned in the rear bearing cavity 110, the first cooling channel 1101 is arranged between the housing 15 and the stator fixing shell 17, cooling oil gas is introduced into the front bearing cavity 13 through one end of the first cooling channel 1101, and then flows back through the front bearing backflow channel 1103; cooling oil gas is introduced into the rear bearing cavity 110 through the rear bearing cooling passage 1102 and then flows back through the rear bearing return passage 1104; the stator and the front bearing set are cooled through the first cooling channel, and the rear bearing set is cooled through the rear bearing cooling channel, so that the key heating position of the electric spindle is cooled. In addition, among this embodiment, directly establish ties the cooling through first cooling channel to stator and front bearing group, on the one hand preheat the stage in the lathe earlier stage and can make the front bearing reach operating temperature fast, on the other hand, in the electricity main shaft operation process, stator and rear bearing are main heat sources that generates heat, can reduce the difference in temperature of front and rear bearing from this to the thermal deformation of bearing around effective compensation solves the problem that influences the precision.
Temperature detection sensors (not shown in the drawings) provided at least at the outlet of the rear bearing return passage 1104 and at the outlet of the front bearing return passage 1103; and monitoring the temperature of the returned cooling oil gas.
The oil gas circulation heat dissipation assembly mainly comprises a cooling oil gas circulation assembly and an oil gas heat dissipation assembly, and needs to be explained, which is the same as the prior art, and is not described again; the outlet of the oil-gas circulation heat dissipation assembly is respectively connected with the inlet of the first cooling channel 1101 and the inlet of the rear bearing cooling channel 1102, and the inlet of the oil-gas circulation heat dissipation assembly is respectively connected with the outlet of the front bearing return channel 1103 and the outlet of the rear bearing return channel 1104; thereby make the cooling oil gas circulate to cool off the cooling oil gas cooling after will absorbing heat, guarantee the temperature difference of cooling oil gas and electric main shaft, improve its heat absorption cooling effect.
The industrial computer, temperature detection sensor convey temperature signal to the industrial computer, and the industrial computer is according to the circulation flow of the oil gas circulation subassembly in the temperature signal control oil gas circulation radiator unit, and is concrete, through industrial computer output control signal, controls the circulating pump change rotational speed in the oil gas circulation subassembly to realize the change of flow. It should be noted that the industrial personal computer analyzes and processes the temperature signal, and the control program and the software code related to controlling the working state of the oil-gas circulation assembly are the prior art, and do not belong to the invention of the application.
Further, as a preferable mode of the present embodiment, the stator fixing housing 17 is provided with a plurality of rib plates 11013 in the electric spindle axial direction, and the rib plates 11013 are arranged in a staggered manner to enclose the S-shaped first cooling passage 1101. Further, the stator fixing shell 17 is provided with a partition 11014 along the axial direction of the electric spindle, and the partition divides the first cooling channel 1101 into two first sub-cooling channels 1101'; each of the first sub-cooling passages 1101' is provided with a first inlet 1101a, a first outlet 1101b, a second inlet 1101c, and a second outlet 1101d, respectively. Therefore, by dividing one first cooling channel 1101 into two first sub-cooling channels 1101 ', each first self-cooling channel 1101' is provided with a separate inlet and outlet, the first inlet 1101a and the second inlet 1101c are communicated with the outlet of the oil-gas circulation heat dissipation assembly through pipelines, and the first outlet 1101b and the second outlet 1101d are respectively communicated with the inlet of the oil-gas circulation heat dissipation assembly through the front bearing return channel 1103 after being communicated with the front bearing cavity 13. Therefore, the length of the cooling channel is shortened, the flow rate of cooling oil gas is improved, the temperature difference between the head end and the tail end of the first sub-cooling channel 1101' is reduced, and the cooling effect is improved; in addition, the flow of cooling oil gas is further increased by arranging the independent inlet and the independent outlet, and the heat absorption and temperature reduction effects are improved.
Further, in order to avoid dead space at the turning position of the first sub-cooling passage 1101 'and prevent cooling oil gas therein from timely participating in circulation, it is preferable that a baffle plate 1101e is disposed at a corner of the turning position of the first sub-cooling passage 1101'. Baffle 1101e is preferably angled at 45 to rib 11013. The problem of circulation dead angle is solved through the arrangement of the baffle plate.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model should be covered within the protection scope of the utility model.
Claims (6)
1. The utility model provides a longmen machining center with electricity main shaft thermal compensation function which characterized in that: comprises that
An electric spindle (10);
a base (20);
the gantry (30), the said gantry (30) is fixedly arranged on the said base (20);
the electric spindle fixing seat (40), the electric spindle fixing seat (40) is movably arranged on the portal frame (30); the electric spindle (10) is fixedly arranged on the electric spindle fixing seat (40); the electric spindle (10) comprises a mandrel (11), a front bearing group (12), a front bearing cavity (13), a front end cover (14), a shell (15), a stator (16), a stator fixing shell (17), a rotor (18), a rear bearing group (111), a rear bearing cavity (110), a first cooling channel (1101), a rear bearing cooling channel (1102), a front bearing backflow channel (1103) and a rear bearing backflow channel (1104), the rotor (18) is fixedly arranged on the mandrel (11), the front bearing set (12) is positioned in the front bearing cavity (13), the rear bearing set (111) is located in the rear bearing cavity (110), the first cooling channel (1101) is arranged between the outer shell (15) and the stator fixing shell (17), cooling oil gas is introduced into the front bearing cavity (13) through one end of the first cooling channel (1101) and then flows back through the front bearing return channel (1103); cooling oil gas is introduced into the rear bearing cavity (110) through the rear bearing cooling channel (1102) and then flows back through the rear bearing return channel (1104);
temperature detection sensors arranged at least at an outlet of the rear bearing return passage (1104) and an outlet of the front bearing return passage (1103);
the oil-gas circulation heat dissipation assembly is respectively connected to the inlet of the first cooling channel (1101), the inlet of the rear bearing cooling channel (1102), the outlet of the front bearing backflow channel (1103) and the outlet of the rear bearing backflow channel (1104);
the industrial personal computer, temperature detection sensor conveys temperature signal to the industrial personal computer.
2. The gantry machining center with the electric spindle thermal compensation function as claimed in claim 1, wherein: the stator fixing shell (17) is provided with a plurality of rib plates (11013) along the axial direction of the electric spindle, and the rib plates (11013) are arranged in a staggered mode to enclose the S-shaped first cooling channel (1101).
3. The gantry machining center with the electric spindle thermal compensation function as claimed in claim 2, wherein: the stator fixing shell (17) is provided with a partition plate (11014) along the axial direction of the electric spindle, and the partition plate divides the first cooling channel (1101) into two first sub-cooling channels (1101'); each of the first sub-cooling channels (1101') is provided with a first inlet (1101a), a first outlet (1101b), a second inlet (1101c), and a second outlet (1101d), respectively.
4. The gantry machining center with the electric spindle thermal compensation function as claimed in claim 3, wherein: the first inlet (1101a) and the second inlet (1101c) are communicated with an outlet of the oil-gas circulation heat dissipation assembly through a pipeline, and the first outlet (1101b) and the second outlet (1101d) are communicated with the front bearing cavity (13) and then return to the inlet of the oil-gas circulation heat dissipation assembly through the front bearing return channel (1103) respectively.
5. The gantry machining center with the electric spindle thermal compensation function as claimed in claim 4, wherein: the corner of the turning part of the first sub-cooling channel (1101') is provided with a baffle plate (1101 e).
6. The gantry machining center with the electric spindle thermal compensation function as claimed in claim 5, wherein: the included angle between the baffle plate (1101e) and the rib plate (11013) is 45 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220881945.9U CN217344701U (en) | 2022-04-15 | 2022-04-15 | Gantry machining center with electric spindle thermal compensation function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220881945.9U CN217344701U (en) | 2022-04-15 | 2022-04-15 | Gantry machining center with electric spindle thermal compensation function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217344701U true CN217344701U (en) | 2022-09-02 |
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ID=83055270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220881945.9U Active CN217344701U (en) | 2022-04-15 | 2022-04-15 | Gantry machining center with electric spindle thermal compensation function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217344701U (en) |
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2022
- 2022-04-15 CN CN202220881945.9U patent/CN217344701U/en active Active
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