Rotary table and machining center

Abstract

The utility model provides a rotary table which comprises a rotary table seat, and a motor stator cooling mechanism is arranged in the rotary table seat. The cooling mechanism is arranged between the rotary table seat and the motor stator, the cooling mechanism comprises a cooling flow channel, a cooling liquid output port and at least two cooling liquid input ports, and the cooling flow channel is arranged between the rotary table seat and the motor stator; the cooling liquid input ports are arranged at intervals and located at the head ends of the corresponding cooling flow channels, and the cooling liquid output ports are located at the tail ends of the cooling flow channels. The cooling flow channel is arranged between the cooling input port and the cooling output port in a spiral extending mode. The utility model provides a machining center. The rotary table provided by the technical scheme of the utility model can meet the cooling requirement of the bottom of the motor while ensuring a better cooling effect on the top of the motor.

Description

Technical Field

[0001] The utility model relates to the technical field of motor cooling, in particular to a turntable and a machining center. Background Art

[0002] The turntable in the prior art generally drives the tilting shaft to rotate through a direct drive motor. The direct drive motor generates heat when working. If the working direct drive motor cannot be cooled down in time, the temperature of the direct drive motor will increase and damage the motor.

[0003] For example, see Figure 1 In the patent application publication number CN 116690241 A, a turntable is disclosed, which includes: a support sleeve 2, which is connected to the inside of the cavity; a cooling groove 17 is provided between the stator 15 of the torque motor 9 and the inner side of the support sleeve 2; a water outlet channel 20 is provided inside the support sleeve 2, and one end of the water outlet channel 20 is connected to the top of the spiral cooling groove 17.

[0004] However, in the above patent, the cooling groove 17 adopts a spiral flow channel, and there is only one coolant input port. The spiral coolant flows from the top of the motor to the bottom and takes away the heat. Although it can increase the heat exchange area, a separate coolant input port is set. When the coolant flows from the top of the motor to the middle position of the motor, part of the heat of the motor has been taken away. The temperature of the coolant will increase, and the cooling effect of the heated coolant on the bottom of the motor will be reduced.

[0005] Therefore, the method of separately setting up a spiral flow channel for the coolant inlet will reduce the cooling effect on the bottom of the motor, which is an urgent problem to be solved. Utility Model Content

[0006] The utility model provides a turntable and a machining center, which can meet the cooling demand of the bottom of the motor while ensuring a better cooling effect on the top of the motor.

[0007] The utility model provides a turntable, comprising a turntable seat, in which a motor stator, a motor rotor and a cooling mechanism are arranged, and the motor rotor is arranged inside the motor stator;

[0008] The cooling mechanism is arranged between the turntable seat and the motor stator, and the cooling mechanism comprises a cooling channel, a coolant outlet and at least two coolant inlets, and the cooling channel is used to circulate coolant to cool the motor stator and / or the motor rotor; each of the coolant inlets is arranged at intervals and is located at the head end of the corresponding cooling channel, and the coolant outlet is located at the tail end of the cooling channel;

[0009] The cooling channel is spirally extended between the cooling liquid inlet and the cooling liquid outlet, and the flow cross section of the cooling channel in the extending direction from the head end to the tail end is gradually increased.

[0010] In some feasible embodiments, the motor stator includes a top and a bottom along the axial direction, at least two of the coolant inlets are close to the top of the motor stator, and at least two of the coolant inlets are evenly arranged along the circumference of the motor stator.

[0011] In some feasible embodiments, the turntable seat has an installation inner cavity, the peripheral wall of the installation inner cavity is fixedly connected to the outer peripheral wall of the motor stator, and the cooling channel is arranged between the peripheral wall of the installation inner cavity and the outer peripheral wall of the motor stator.

[0012] In some feasible embodiments, a first cooling groove is provided on the outer peripheral wall of the motor stator, and the first cooling groove and the peripheral wall of the installation inner cavity are enclosed to form the cooling channel; or,

[0013] A first cooling groove is provided on the outer peripheral wall of the motor stator, and a second cooling groove is provided on the peripheral wall of the installation inner cavity, and the first cooling groove and the second cooling groove are enclosed to form the cooling channel; or,

[0014] A first cooling groove is provided on the peripheral wall of the installation inner cavity, and the first cooling groove and the outer peripheral wall of the motor stator are surrounded to form the cooling channel.

[0015] In some feasible embodiments, the number of the cooling channels corresponds to the number of the coolant inlet ports, two adjacent cooling channels are arranged at intervals, and the tail end of each cooling channel converges at the coolant outlet port.

[0016] In some feasible embodiments, the interval between two adjacent cooling channels gradually widens in the extending direction from the head end to the tail end, and / or,

[0017] The cooling channel gradually widens in the extending direction from the head end to the tail end, and / or,

[0018] The cooling channel gradually deepens in an extending direction from the head end to the tail end.

[0019] In some feasible embodiments, input channels and output channels are provided in the turntable seat body, the number of the input channels corresponds to the number of the cooling channels, the output end of each input channel is connected to the corresponding coolant input port, and the input end of the output channel is connected to the coolant output port.

[0020] In some feasible embodiments, the three coolant inlets are all located at the top of the motor stator and are distributed at equal intervals;

[0021] Three input channels are provided in the turntable body corresponding to the number of the coolant input ports;

[0022] The tail end of each cooling channel is connected to a converging ring channel, and an output channel is arranged in the turntable seat body, and the output channel is connected to the converging ring channel.

[0023] The utility model provides a machining center, comprising a base and the above-mentioned turntable, wherein the turntable is arranged on the base.

[0024] In some feasible embodiments, the machining center is a horizontal machining center, which also includes a column and a spindle box. The spindle box is slidably arranged on the column in the vertical direction, the column is slidably installed on the base in the horizontal direction, the turntable is spaced apart from the column, and the turntable is slidably installed on the base in the longitudinal direction.

[0025] The above-mentioned turntable and machining center, by setting up a turntable, include a turntable seat, in which a motor stator and a cooling mechanism are arranged; the cooling mechanism is arranged between the turntable seat and the motor stator, the cooling mechanism includes a cooling channel, a coolant outlet and at least two coolant inlets, and the cooling channel is arranged between the turntable seat and the motor stator; each of the coolant inlets is arranged at intervals and is located at the head end of the corresponding cooling channel, and the coolant outlet is located at the tail end of the cooling channel; the cooling channel is arranged in a spirally extending manner between the coolant inlet and the coolant outlet, and the cooling channel is arranged with a gradually increasing flow cross-section in the extending direction from the head end to the tail end. By arranging at least two coolant inlets, there are two sources of coolant entering the cooling channel. Compared with the technical solution of having only one coolant inlet entering the cooling channel, by increasing the number of coolant inlets, the temperature of the coolant in the cooling channel can be reduced, and the cooling requirements of the bottom of the motor can be met.

[0026] In addition, the structural design of the cooling channel, which is narrow at the top and wide at the bottom, allows the coolant at the head end of the cooling channel to flow faster, thereby speeding up the removal of the large amount of heat generated at the top of the motor. The wide design of the cooling channel at the bottom can slow down the flow rate of the coolant, which can meet the cooling needs of the relatively less heat generated at the bottom of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without creative work.

[0028] Figure 1 A cross-sectional view of a cooling slot in a turntable provided in the prior art.

[0029] Figure 2 A three-dimensional diagram of a turntable provided in accordance with an embodiment of the present utility model.

[0030] Figure 3 A cross-sectional view of a turntable provided in accordance with an embodiment of the present utility model.

[0031] Figure 4 A schematic diagram of a motor stator in a turntable provided in one embodiment of the utility model.

[0032] Figure 5 A front view of a motor stator in a turntable provided in another embodiment of the utility model.

[0033] Component Symbols

[0034] 100, turntable seat; 101, mounting inner cavity; 102, input channel; 103, output channel; 200, motor stator; 300, motor rotor; 401, cooling channel; 4011, first cooling trough; 4012, second cooling trough; 4013, tributary; 4014, main stream; 400, cooling mechanism; 402, coolant output port; 403, coolant input port; 404, converging ring channel; 500, workbench.

[0035] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0036] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0038] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] In order to make the content of the utility model more clearly and more accurately understood, it will now be described in detail with reference to the accompanying drawings. The accompanying drawings of the specification illustrate examples of embodiments of the utility model, wherein the same reference numerals represent the same elements. It is understood that the scales shown in the accompanying drawings of the specification are not the scales of the actual implementation of the utility model, which are only for the purpose of illustration and are not drawn according to the original size.

[0040] Please see Figure 2 and 3 The utility model provides a turntable, including a turntable seat 100, in which a motor stator 200, a motor rotor 300 and a cooling mechanism 400 are arranged. The motor rotor 300 is arranged on the inner side of the motor stator 200, and the motor rotor 300 can rotate axially relative to the motor stator 200.

[0041] The turntable seat 100 has an installation inner cavity 101, and the peripheral wall of the installation inner cavity 101 is fixedly connected to the outer peripheral wall of the motor stator 200. The cooling channel 401 is arranged between the turntable seat 100 and the motor stator 200. The cooling channel 401 is arranged between the peripheral wall of the installation inner cavity 101 and the outer peripheral wall of the motor stator 200. It can be understood that the cooling channel 401 can be arranged separately on the inner peripheral wall of the turntable seat 100, or the cooling channel 401 is arranged separately on the outer peripheral wall of the motor stator 200, or the cooling channel 401 is arranged on the inner peripheral wall of the turntable seat 100 and the outer peripheral wall of the motor stator 200 at the same time. The setting position of the cooling channel 401 can be adjusted according to the cooling intensity.

[0042] In this embodiment, a first cooling groove 4011 is opened on the outer peripheral wall of the motor stator 200, and a second cooling groove 4012 is opened on the peripheral wall of the installation inner cavity 101. The first cooling groove 4011 and the second cooling groove 4012 enclose the cooling channel 401. By setting the first cooling groove 4011 and the second cooling groove 4012, and the flow direction of the cooling channel 401 is from bottom to top along the axial direction of the motor rotor 300, the volume of the cooling channel 401 can be increased, and more coolant can flow in the cooling channel 401 per unit time, thereby improving the cooling effect.

[0043] In some other embodiments, a first cooling groove 4011 is opened on the outer peripheral wall of the motor stator 200, and the first cooling groove 4011 and the peripheral wall of the installation inner cavity 101 are enclosed to form the cooling channel 401, so that the cooling channel 401 and the outer peripheral wall of the motor stator 200 are enclosed to form a channel for the flow of coolant, and the volume of the motor stator 200 will not be reduced, thereby ensuring the output power of the motor.

[0044] In some other embodiments, a first cooling groove 4011 is opened on the peripheral wall of the installation inner cavity 101, and the first cooling groove 4011 and the outer peripheral wall of the motor stator 200 are enclosed to form the cooling channel 401. By setting the first cooling groove 4011 on the installation inner cavity 101, the design depth and height of the first cooling groove 4011 can be determined according to actual conditions, thereby ensuring that the volume of the motor stator 200 will not be reduced and the output power of the motor is guaranteed.

[0045] In this embodiment, the motor stator 200 is cylindrical, and the motor rotor 300 is also cylindrical. The motor stator 200 is sleeved on the outer circumference of the motor rotor 300. After power is turned on, the motor rotor 300 rotates around the motor stator 200.

[0046] When the motor is powered on, heat is generated, and the cooling mechanism 400 circulates coolant to cool the motor stator 200 and / or the motor rotor 300. The cooling mechanism 400 is arranged between the turntable seat 100 and the motor stator 200, and the cooling mechanism 400 includes a cooling channel 401, a coolant outlet 402 and at least two coolant inlets 403. Each of the coolant inlets 403 is arranged at intervals and is located at the head end of the corresponding cooling channel 401. The coolant outlet 402 is located at the tail end of the cooling channel 401. The cooling channel 401 is used to circulate coolant to cool the motor stator 200 and the motor rotor 300. By providing at least two coolant inlet ports 403, two coolants can enter the cooling channel 401. Compared with the technical solution in which there is only one coolant inlet port for entering the cooling channel, by increasing the coolant inlet port 403, the temperature of the coolant in the cooling channel 401 can be reduced, and in particular, the cooling temperature at the coolant inlet port 403 in the cooling channel 401 can be reduced, thereby improving the cooling effect on the motor.

[0047] An input channel 102 and an output channel 103 are provided in the body of the turntable seat 100. The number of the input channels 102 corresponds to the number of the cooling channels 401. The output end of each input channel 102 is connected to the corresponding coolant input port 403, and the input end of the output channel 103 is connected to the coolant output port 402. It can be understood that the input channel 102 is used to provide the coolant to the cooling channel 401 through the coolant input port 403, and the output channel 103 is used to discharge the coolant to the outside of the turntable through the coolant output port 402, thereby realizing the continuous delivery of fresh and low-temperature coolant to the cooling channel 401.

[0048] Please see Figure 4 The three coolant input ports 403 are all located at the top of the motor stator 200 and are evenly spaced, so that the cooling stroke of each cooling channel 401 is the longest, thereby improving the cooling effect; three input channels 102 are provided in the turntable seat 100 body corresponding to the number of the coolant input ports 403; a converging ring channel 404 is also connected to the tail end of each cooling channel 401, and an output channel 103 is provided in the turntable seat 100 body, and the output channel 103 is connected to the converging ring channel 404, so that it is convenient to converge a plurality of output channels 103 through the converging ring channel 404 and then discharge them from the motor stator 200.

[0049] The cooling channel 401 is spirally extended and arranged between the coolant inlet 403 and the coolant outlet 402. The cooling channel 401 gradually widens in the direction extending from the head end to the tail end, and / or the cooling channel 401 gradually deepens in the direction extending from the head end to the tail end; the narrower the width of the head end of the cooling channel 401, the more the number of cooling channels 401, the greater the density of the cooling channel 401, the number of coolant inlets 403 will also increase accordingly, and the cooling effect of the head end of the cooling channel 401 will be stronger, so as to adapt to the scene where the motor stator 200 and the electronic rotor 300 are located at the head end of the cooling channel 401 and generate a large amount of heat. Specifically, the structural design of the cooling channel 401, which is narrow on the top and wide on the bottom, enables the coolant at the head end of the cooling channel 401 to flow faster, thereby accelerating the removal of a large amount of heat generated at the top of the motor, and the wide design of the cooling channel 401 at the bottom can slow down the flow rate of the coolant, and can adapt to the cooling requirements of the relatively small amount of heat generated at the bottom of the motor. The cooling channel 401 gradually widens in the direction extending from the head end to the tail end, thereby increasing the flow rate of the coolant in the cooling channel 401 per unit time and improving the cooling effect of the cooling channel 401. The cooling channel 401 gradually deepens in the direction extending from the head end to the tail end, thereby increasing the flow rate of the coolant in the cooling channel 401 per unit time and improving the cooling effect of the cooling channel 401.

[0050] Please see Figure 3 and 4 The motor stator 200 includes a top and a bottom along the axial direction, at least two of the coolant inlets 403 are close to the top of the motor stator 200, and at least two of the coolant inlets 403 are evenly arranged along the periphery of the motor stator 200. In this embodiment, the number of the cooling channels 401 corresponds to the number of the coolant inlets 403, and two adjacent cooling channels 401 are arranged at intervals along the axial direction of the motor stator 200, each coolant inlet 403 is arranged at the head end of the corresponding cooling channel 401, and the tail end of each cooling channel 401 converges at the coolant outlet 402. By setting a plurality of cooling channels 401 and a plurality of coolant inlets 403, the motor can be cooled by a plurality of parallel cooling channels 401, and the temperature of the coolant input by each coolant inlet 403 is relatively low. In this way, compared with the technical solution of only setting one coolant inlet 403, a plurality of parallel cooling channels 401 can be applied to the motor, thereby improving the cooling effect of the motor.

[0051] Please see Figure 5 , the interval between the two cooling channels 401 gradually widens in the extension direction from the head end to the tail end, for example, the cooling channel 401 includes at least two tributaries 4013 arranged at the top of the turntable seat 100, and a main stream 4014 arranged at the bottom of the turntable seat 100, each coolant inlet 403 is respectively connected to the head end of the corresponding tributary 4013, the tail ends of at least two tributaries 4013 are connected to the head end of the main stream 4014, and the tail end of each main stream 4014 converges at the coolant outlet 402. By setting a plurality of tributaries 4013, the cooling stroke of the cooling channel 401 can be increased, and each tributary 4013 will be equipped with a coolant inlet 403, and each tributary will have fresh low-temperature coolant input, which will improve the cooling effect on the top of the turntable seat 100, and is suitable for the scene where the heat generated at the top of the motor is relatively large.

[0052] The above-mentioned turntable is provided with a turntable seat 100, in which a motor stator 200, a motor rotor 300 and a cooling mechanism 400 are provided, and the motor rotor 300 is provided inside the motor stator 200; the cooling mechanism 400 is provided between the turntable seat 100 and the motor stator 200, and the cooling mechanism 400 includes a cooling channel 401, a coolant outlet 402 and at least two coolant inlets 403, and the cooling channel 401 is used to circulate coolant so as to cool the motor stator 200 and / or the motor rotor 300; each of the coolant inlets 403 is provided at intervals and is located at the corresponding cooling channel 401 The cooling liquid outlet 402 is located at the head end of the cooling channel 401; the cooling channel 401 is spirally extended between the cooling liquid inlet 403 and the cooling liquid outlet 402, and the cooling channel 401 gradually widens in the extension direction from the head end to the tail end. By setting at least two cooling liquid inlets 403, there are two sources of cooling liquid entering the cooling channel 401. Compared with the technical solution with only one cooling liquid inlet into the cooling channel, by increasing the number of cooling liquid inlets, the temperature of the cooling liquid in the cooling channel 401 can be reduced, which can meet the cooling requirements of the bottom of the motor.

[0053] The utility model also provides a machining center, including a base and the above-mentioned turntable, the turntable also includes a workbench 500, the motor rotor 300 drives the workbench 500 to rotate relative to the motor stator 200, and the turntable is arranged on the base. In this embodiment, the machining center is a horizontal machining center, and the machining center also includes a column and a spindle box, the spindle box is slidably arranged on the column in the vertical direction, the column is slidably installed on the base in the horizontal direction, the turntable is spaced from the column, and the turntable is slidably installed on the base in the longitudinal direction. By setting the machining center as a horizontal machining center, that is, arranging the spindle in the horizontal direction, the cutting force of the spindle can be improved, so that the machining center can adapt to heavy cutting scenarios.

[0054] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

[0055] The above examples are only preferred embodiments of the present invention, and certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention still fall within the scope covered by the present invention.

Claims

1. A turntable, comprising a turntable seat (100), characterized in that: A motor stator (200) and a cooling mechanism (400) are provided in the turntable seat (100); The cooling mechanism (400) is arranged between the turntable seat (100) and the motor stator (200), and the cooling mechanism (400) comprises a cooling channel (401), a cooling liquid outlet (402) and at least two cooling liquid inlets (403); the cooling channel (401) is arranged between the turntable seat (100) and the motor stator (200); each of the cooling liquid inlets (403) is arranged at intervals and is located at the head end of the corresponding cooling channel (401); the cooling liquid outlet (402) is located at the tail end of the cooling channel (401); The cooling channel (401) is arranged in a spirally extending manner between the cooling liquid inlet (403) and the cooling liquid outlet (402), and the flow cross section of the cooling channel (401) in the extending direction from the head end to the tail end is gradually increased.

2. The turntable according to claim 1, characterized in that: The motor stator (200) comprises a top and a bottom along the axial direction, at least two of the coolant inlets (403) are close to the top of the motor stator (200), and at least two of the coolant inlets (403) are evenly arranged along the periphery of the motor stator (200).

3. The turntable according to claim 2, characterized in that: The turntable seat (100) has an installation inner cavity (101), the peripheral wall of the installation inner cavity (101) is fixedly connected to the outer peripheral wall of the motor stator (200), and the cooling channel (401) is arranged between the peripheral wall of the installation inner cavity (101) and the outer peripheral wall of the motor stator (200).

4. The turntable according to claim 3, characterized in that: A first cooling groove (4011) is provided on the outer peripheral wall of the motor stator (200), and the first cooling groove (4011) and the peripheral wall of the installation inner cavity (101) are enclosed to form the cooling channel (401); or, A first cooling groove (4011) is provided on the outer peripheral wall of the motor stator (200), and a second cooling groove (4012) is provided on the peripheral wall of the installation inner cavity (101), and the first cooling groove (4011) and the second cooling groove (4012) are enclosed to form the cooling channel (401); or, A first cooling groove (4011) is provided on the peripheral wall of the installation inner cavity (101), and the first cooling groove (4011) and the outer peripheral wall of the motor stator (200) are enclosed to form the cooling channel (401).

5. The turntable according to claim 3, characterized in that: The number of the cooling channels (401) corresponds to the number of the cooling liquid input ports (403), two adjacent cooling channels (401) are arranged at intervals, and the tail end of each cooling channel (401) converges at the cooling liquid output port (402).

6. The turntable according to claim 5, characterized in that: The interval between two adjacent cooling channels (401) gradually widens in the extending direction from the head end to the tail end, and / or, The cooling channel (401) gradually widens in the extending direction from the head end to the tail end, and / or, The cooling channel (401) gradually deepens in the extending direction from the head end to the tail end.

7. The turntable according to claim 5, characterized in that: An input channel (102) and an output channel (103) are provided in the body of the turntable seat (100), the number of the input channels (102) corresponds to the number of the cooling channels (401), the output end of each input channel (102) is connected to the corresponding coolant input port (403), and the input end of the output channel (103) is connected to the coolant output port (402).

8. The turntable according to claim 7, characterized in that: The three cooling liquid input ports (403) are all located at the top of the motor stator (200) and are arranged at equal intervals; Three input channels (102) are provided in the body of the turntable seat (100) corresponding to the number of the coolant input ports (403); The tail end of each cooling channel (401) is also connected to a converging ring channel (404), and an output channel (103) is provided in the body of the turntable seat (100), and the output channel (103) is connected to the converging ring channel (404).

9. A machining center, characterized in that: It comprises a base and a turntable as described in any one of claims 1 to 8, wherein the turntable is arranged on the base.

10. The machining center according to claim 9, characterized in that: The machining center is a horizontal machining center, which also includes a column and a spindle box. The spindle box is slidably arranged on the column in the vertical direction, the column is slidably installed on the base in the horizontal direction, the turntable is spaced apart from the column, and the turntable is slidably installed on the base in the longitudinal direction.

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