CN216097517U - High-precision electric five-axis numerical control turntable - Google Patents
High-precision electric five-axis numerical control turntable Download PDFInfo
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- CN216097517U CN216097517U CN202122546929.2U CN202122546929U CN216097517U CN 216097517 U CN216097517 U CN 216097517U CN 202122546929 U CN202122546929 U CN 202122546929U CN 216097517 U CN216097517 U CN 216097517U
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Abstract
The application discloses electronic five numerical control revolving stages of high accuracy, this electronic five numerical control revolving stages of high accuracy includes: the dividing head comprises a dividing head box body, a direct drive motor stator, a direct drive motor rotor and a main shaft system; the direct-drive motor stator is sleeved in the indexing head box body and is fixedly connected with the indexing head box body; the direct drive motor rotor is sleeved in the direct drive motor stator and is in transmission connection with the direct drive motor stator; two ends of the stator of the direct drive motor and two ends of the rotor of the direct drive motor are both positioned on the inner side of the dividing head box body; the main shaft system is sleeved in the direct drive motor rotor and fixedly connected with the direct drive motor rotor. The problems that in the prior art, the rotary motion of a main shaft of a numerical control rotary table is mainly realized by mechanical transmission of an external motor, the size of the whole dividing head is large, the space occupation ratio is large, and the dividing stability and the positioning precision are poor are solved.
Description
Technical Field
The application relates to the technical field of dividing heads, in particular to a high-precision electric five-axis numerical control rotary table.
Background
The numerical control equipment has the advantages that an indexing head structure is required to be used in a rotary table of the numerical control equipment, the indexing head is a machine tool accessory which is arranged on a milling machine and used for dividing a workpiece into any equal parts, the workpiece clamped between a tip or a chuck is divided into any angle by utilizing an indexing scale ring, a vernier, a positioning pin, an indexing disc and an exchange gear, the circumference can be divided into any equal parts, and the machine tool is assisted to process various grooves, spur gears, spiral spur gears, Archimedes spiral cams and the like by utilizing cutters in various shapes. At present, the rotary motion of a main shaft in the dividing head is mainly realized by mechanical transmission of an external motor, namely, a transmission part is arranged outside the dividing head, so that the whole dividing head is large in size, large in space occupation ratio and poor in rigidity of the whole structure.
An effective solution is not provided at present aiming at the problems that the rotary motion of a main shaft of a numerical control rotary table in the related art is mainly realized by mechanical transmission of an external motor, so that the whole dividing head has large volume, large space occupation ratio and poor dividing stability and positioning precision.
SUMMERY OF THE UTILITY MODEL
The main aim of this application provides an electronic five numerical control revolving stage of high accuracy to solve among the related art numerical control revolving stage in the rotary motion of main shaft mainly by external motor mechanical transmission realize, lead to the volume of whole dividing head great, the space accounts for than big, dividing stationarity and positioning accuracy poor problem.
In order to achieve the above object, the present application provides a high-precision electric five-axis numerical control turntable, including: the dividing head comprises a dividing head box body, a direct drive motor stator, a direct drive motor rotor and a main shaft system; wherein the content of the first and second substances,
the direct-drive motor stator is sleeved in the indexing head box body and is fixedly connected with the indexing head box body; the direct drive motor rotor is sleeved in the direct drive motor stator and is in transmission connection with the direct drive motor stator; two ends of the stator of the direct drive motor and two ends of the rotor of the direct drive motor are both positioned on the inner side of the dividing head box body;
the main shaft system is sleeved in the direct drive motor rotor and fixedly connected with the direct drive motor rotor.
Furthermore, two ends of the dividing head box body are arranged in an opening mode, and the dividing head box body, the direct-drive motor stator, the direct-drive motor rotor and the main shaft system are arranged coaxially.
Further, the main shaft system comprises a main shaft system rotating part and a main shaft system fixing part, the main shaft system rotating part is sleeved in the direct drive motor rotor and is fixedly connected with the direct drive motor rotor, and the main shaft system fixing part is sleeved in the main shaft system rotating part;
the main shaft shafting rotating part can wind the axis of main shaft shafting fixed part is rotatory, be provided with the brake structure on the main shaft shafting fixed part, the brake structure is used for right main shaft shafting rotating part carries out the circumference location.
And a further main shaft system fixing part is fixed at one end of the dividing head box body, and a main shaft system rotating part extends out of the other end of the dividing head box body.
Further, a rotating gap is formed between the direct-drive motor stator and the direct-drive motor rotor.
Furthermore, the two ends of the dividing head box body are provided with annular installation parts, and the two ends of the direct-drive motor stator are respectively abutted to the corresponding installation parts.
Furthermore, the end face of the direct drive motor rotor is abutted against the end face of the main shaft shafting rotating part and is fixedly connected with the main shaft shafting rotating part through bolts.
Further, the main shaft system fixing part comprises a friction sleeve, and the friction sleeve is sleeved in the direct-drive motor rotor and is fixedly connected with the direct-drive motor rotor;
the main shaft system rotating part comprises a tensioning sleeve and a positioning mandrel, the tensioning sleeve is sleeved on the positioning mandrel, the positioning mandrel is fixed on the dividing head box body, and two ends of the tensioning sleeve and two ends of the positioning mandrel are fixed in a sealing mode;
the brake structure comprises an oil cavity arranged between the tensioning sleeve and the outer circle of the positioning mandrel, and the positioning mandrel is provided with an oil inlet channel and an oil outlet channel which are communicated with the oil cavity;
the tensioning sleeve is sleeved on the friction sleeve, and the end part of the friction sleeve is in transmission connection with the main shaft; the friction sleeve and the tensioning sleeve have variable gaps, so that the tensioning sleeve can be driven by hydraulic pressure to expand outwards to be in contact with the inner wall of the friction sleeve, and static friction force is generated.
In the embodiment of the application, the indexing head box, the direct drive motor stator, the direct drive motor rotor and the spindle shaft system are arranged; wherein, the stator of the direct drive motor is sleeved in the dividing head box body and is fixedly connected with the dividing head box body; the direct drive motor rotor is sleeved in the direct drive motor stator and is in transmission connection; two ends of the direct drive motor stator and two ends of the direct drive motor rotor are both positioned on the inner side of the dividing head box body; the main shaft system sleeve is arranged in the direct-drive motor rotor and fixedly connected with the direct-drive motor rotor, and the purpose that the direct-drive motor stator and the direct-drive motor rotor are arranged in the dividing head box body to drive the rotating part of the main shaft system to rotate in the dividing head box body is achieved, so that the structural compactness of the whole dividing head is improved, the proportion space is greatly reduced, the electric dividing head is miniaturized, the technical effects of stability and positioning accuracy during dividing are improved, and the problems that in the related technology, the rotating motion of a main shaft of a numerical control rotary table is mainly realized by mechanical transmission of an external motor, the size of the whole dividing head is large, the proportion space is large, and the dividing stability and the positioning accuracy are poor are solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram according to an embodiment of the present application;
FIG. 2 is a schematic structural diagram of a main shaft system according to an embodiment of the present application;
the automatic oil feeding device comprises a dividing head box body 1, a direct-drive motor stator 2, a direct-drive motor rotor 3, a mounting part 4, a brake structure 5, a friction sleeve 51, a sealing ring 52, a tensioning sleeve 53, a positioning mandrel 54, an oil cavity 55, a main shaft system 6, a main shaft system rotating part 61, a main shaft system fixing part 62, an oil feeding channel 56 and an oil discharging channel 57.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.
In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
In addition, the term "plurality" shall mean two as well as more than two.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1 to 2, an embodiment of the present application provides a high-precision electric five-axis numerical control turntable, including: the device comprises a dividing head box body 1, a direct drive motor stator 2, a direct drive motor rotor 3 and a main shaft system 6; wherein the content of the first and second substances,
the direct-drive motor stator 2 is sleeved in the dividing head box body 1 and is fixedly connected with the dividing head box body; the direct drive motor rotor 3 is sleeved in the direct drive motor stator 2 and is in transmission connection; moreover, two ends of the direct drive motor stator 2 and two ends of the direct drive motor rotor 3 are both positioned at the inner side of the dividing head box body 1;
the main shaft system 6 is sleeved in the direct drive motor rotor 3 and is fixedly connected.
In this embodiment, the index head structure mainly comprises an index head box 1, a direct drive motor stator 2, a direct drive motor rotor 3 and a main shaft system 6. The three are the mode of cup jointing in proper order, and dividing head box 1 is as the support part of whole electronic dividing head, and its whole is circular structure, and it has a mounting hole and two installation faces, and mounting hole and installation face need guarantee higher size and geometric tolerances precision as the positioning reference of whole shafting. The direct-drive motor stator 2 and the direct-drive motor rotor 3 jointly form a direct-drive motor, wherein the direct-drive motor stator 2 is sleeved in a mounting hole of the dividing head box body 1, the direct-drive motor rotor 3 is sleeved in the direct-drive motor stator 2, and a rotating gap is formed between the direct-drive motor stator 2 and the direct-drive motor rotor 3. When energized, the stator is stationary and the rotor is rotatable about its common axis. The excircle of the direct-drive motor stator 2 is matched with the mounting hole of the dividing head box body 1 to realize centering in the dividing head box body 1, and two end faces of the direct-drive motor stator 2 are respectively contacted with the left end and the right end arranged on the dividing head box body 1 to complete axial positioning in the dividing head box body 1.
The main shaft system 6 is arranged in the direct drive motor rotor 3, and the direct drive motor rotor 3 can drive a rotating part of the main shaft system 6 to rotate around an axis, so that a dividing head rotating shaft connected with the main shaft system is driven to rotate. The embodiment adopts a structure of a built-in direct drive motor, so that the occupation space can be greatly reduced, and the miniaturization of the electric dividing head is realized.
Because the direct drive motor is used, mechanical transmission (mainly in the form of gear transmission and synchronous pulley transmission) is omitted, so that impact and instability in the mechanical transmission can be avoided, and the stability in indexing can be improved; and the reverse clearance in mechanical transmission can be avoided, so that the reverse positioning precision in indexing can be improved.
Because the rotor of the direct drive motor is rigidly connected with the rotating part 61 of the main shaft system, the integral rigidity of the electric dividing head is improved.
Because the direct drive motor is used, the direct drive motor has the characteristics of high indexing precision and large output torque, and therefore the rotary part 61 of the main shaft system in rigid connection has the same characteristics.
Because the direct drive motor is used, the control driver matched with the direct drive motor can be configured, and the automation degree of the electric head can be improved.
As shown in fig. 1 to 2, two ends of the dividing head box 1 are provided with openings, and the dividing head box 1, the direct drive motor stator 2, the direct drive motor rotor 3 and the main shaft system 6 are coaxially arranged. The main shaft system fixing portion 62 is fixed to one end of the index head housing 1, and the main shaft system rotating portion 61 extends out of the other end of the index head housing 1.
As shown in fig. 1 to 2, the main shaft 6 includes a main shaft rotating portion 61 and a main shaft fixing portion 62, the main shaft rotating portion 61 is sleeved in the direct drive motor rotor 3 and is fixedly connected to the direct drive motor rotor, and the main shaft fixing portion 62 is sleeved in the main shaft rotating portion 61;
the main shaft system rotating part 61 can rotate around the axis of the main shaft system fixing part 62, the main shaft system fixing part 62 is provided with a brake structure 5, and the brake structure 5 is used for circumferentially positioning the main shaft system rotating part 61.
Specifically, it should be noted that the main shaft 6 needs to circumferentially position its rotating part in the using process, so the main shaft 6 includes a main shaft fixing part 62 and a main shaft rotating part 61, wherein the main shaft fixing part 62 is fixed on the index head box 1, and the main shaft rotating part 61 can be used as the rotating part of the main shaft 6 to be connected with the direct drive motor rotor 3. In order to realize circumferential positioning of the rotating part 61 of the main shaft system, the device further comprises a brake structure 5, and circumferential positioning and phase holding of the rotating part 61 of the main shaft system can be realized by controlling the brake structure 5 to act. The brake structure 5 may be a brake pad or a hydraulic brake structure 5, etc., and is not limited herein.
As shown in fig. 1 to 2, two ends of the angle head box 1 are provided with annular mounting portions 4, and two ends of the direct drive motor stator 2 are respectively abutted against the corresponding mounting portions 4. The axial positioning of the direct drive motor stator 2 can be realized through the mounting part 4. The end face of the direct drive motor rotor 3 is abutted against the end face of the main shaft shafting rotating part 61 and is fixedly connected with the end face through a bolt.
As shown in fig. 1 to 2, the main shaft system fixing portion 62 includes a friction sleeve 51, and the friction sleeve 51 is sleeved in the direct drive motor rotor 3 and is fixedly connected thereto;
the main shaft system rotating part 61 comprises a tensioning sleeve 53 and a positioning mandrel 54, the tensioning sleeve 53 is sleeved on the positioning mandrel 54, the positioning mandrel 54 is fixed on the dividing head box body 1, two ends of the tensioning sleeve 53 are fixed with two ends of the positioning mandrel 54 in a sealing mode, and sealing can be achieved through a sealing ring 52;
the brake structure 5 comprises an oil cavity 55 arranged between the tensioning sleeve 53 and the outer circle of the positioning mandrel 54, and the positioning mandrel 54 is provided with an oil inlet channel 56 and an oil outlet channel 57 which are communicated with the oil cavity 55;
the tensioning sleeve 53 is sleeved on the friction sleeve 51, and the end part of the friction sleeve 51 is in transmission connection with the main shaft; the friction sleeve 51 and the tension sleeve 53 have a deformation clearance, so that the tension sleeve 53 can be driven by hydraulic pressure to expand outwards to contact with the inner wall of the friction sleeve 51 and generate static friction force.
Specifically, it should be noted that the tensioning sleeve 53 is sleeved on the positioning core shaft 54, the friction sleeve 51 is sleeved on the tensioning sleeve 53, the tensioning sleeve 53 and the positioning core shaft 54 are fixedly connected, and two ends of the tensioning sleeve 53 are fixedly connected with two ends of the positioning core shaft 54 in a sealing manner, so that an oil chamber 55 formed between the two has good sealing performance.
The tensioning sleeve 53 and the positioning mandrel 54 serve as a main shaft system fixing part 62, and the main shaft system fixing part 62 is fixed on a fixed part (such as a rotating seat) of the main shaft system 6. The friction sleeve 51 is connected with the main shaft to serve as a main shaft axis rotating part 61. The positioning accuracy of the main shaft system fixing part 62 and the main shaft system rotating part 61 is ensured in the coaxiality
Within. Therefore, the coaxiality of the tensioning sleeve 53 and the friction sleeve 51 is ensured, and the contact uniformity of the tensioning sleeve 53 and the friction sleeve 51 during tensioning is met.
The friction sleeve 51 is sleeved on the tensioning sleeve 53, and in a normal state, a certain deformation gap is formed between the friction sleeve 51 and the tensioning sleeve 53, so that the friction sleeve 51 can freely rotate on the tensioning sleeve 53. Because the positioning mandrel 54 is provided with the oil inlet channel 56 and the oil outlet channel 57 which are communicated with the oil cavity 55, when the positioning mandrel is connected with external hydraulic equipment, hydraulic oil can be pressurized and then injected into the oil cavity 55 through the oil inlet channel 56, so that the pressure in the oil cavity 55 is increased. The outer wall of the oil chamber 55 (i.e. the side wall of the tensioning sleeve 53) has a certain deformation capacity, and when the pressure of the oil chamber 55 rises, the outer wall of the oil chamber 55 also expands outwards, so that the outer circle of the tensioning sleeve 53 contacts with the inner wall of the friction sleeve 51, and the blocking torque is provided by the friction force between the outer circle of the tensioning sleeve 53 and the inner wall of the friction sleeve 51 (the blocking torque is more than 1.5 times of the maximum rotation torque on the main shaft shafting rotating part 61 according to the design requirement). When the friction sleeve 51 is in transmission connection with the main shaft system 6, the locked-rotor torque generated by the tension sleeve 53 can ensure that the main shaft system rotating part 61 does not generate circumferential angular displacement under the action of external torque, thereby realizing phase maintenance.
When the hydraulic oil in the oil chamber 55 is discharged through the oil outlet channel 57 for pressure relief, the pressure of the oil chamber 55 is reduced, so that the tensioning sleeve 53 retracts and is not in contact with the friction sleeve 51, the shafting fixing part and the shafting rotating part are separated from each other, and the shafting fixing part is ensured not to influence the movement of the main shaft shafting rotating part 61.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (8)
1. A high-precision electric five-axis numerical control turntable is characterized by comprising: the dividing head comprises a dividing head box body, a direct drive motor stator, a direct drive motor rotor and a main shaft system; wherein the content of the first and second substances,
the direct-drive motor stator is sleeved in the indexing head box body and is fixedly connected with the indexing head box body; the direct drive motor rotor is sleeved in the direct drive motor stator and is in transmission connection with the direct drive motor stator; two ends of the stator of the direct drive motor and two ends of the rotor of the direct drive motor are both positioned on the inner side of the dividing head box body;
the main shaft system is sleeved in the direct drive motor rotor and fixedly connected with the direct drive motor rotor.
2. The high-precision electric five-axis numerical control turntable according to claim 1, wherein two ends of the dividing head box body are arranged in an opening manner, and the dividing head box body, the direct-drive motor stator, the direct-drive motor rotor and the spindle shafting are coaxially arranged.
3. The high-precision electric five-axis numerical control turntable as claimed in claim 2, wherein the main shaft system comprises a main shaft system rotating part and a main shaft system fixing part, the main shaft system rotating part is sleeved in the direct drive motor rotor and is fixedly connected with the direct drive motor rotor, and the main shaft system fixing part is sleeved in the main shaft system rotating part;
the main shaft shafting rotating part can wind the axis of main shaft shafting fixed part is rotatory, be provided with the brake structure on the main shaft shafting fixed part, the brake structure is used for right main shaft shafting rotating part carries out the circumference location.
4. The high-precision electric five-axis numerical control turntable according to claim 3, wherein the spindle shafting fixing part is fixed at one end of the dividing head box body, and the spindle shafting rotating part extends out of the other end of the dividing head box body.
5. The high-precision electric five-axis numerical control turntable according to any one of claims 1 to 4, wherein a rotating gap is formed between the direct-drive motor stator and the direct-drive motor rotor.
6. The high-precision electric five-axis numerical control turntable as claimed in claim 5, wherein two ends of the dividing head box body are provided with annular mounting parts, and two ends of the stator of the direct drive motor are respectively abutted against the corresponding mounting parts.
7. The high-precision electric five-axis numerical control turntable as claimed in claim 6, wherein an end surface of the rotor of the direct drive motor abuts against an end surface of the rotating part of the main shaft system and is fixedly connected with the rotating part of the main shaft system through a bolt.
8. The high-precision electric five-axis numerical control turntable according to claim 6 or 7, wherein the spindle shafting fixing part comprises a friction sleeve, and the friction sleeve is sleeved in the direct drive motor rotor and fixedly connected with the direct drive motor rotor;
the main shaft system rotating part comprises a tensioning sleeve and a positioning mandrel, the tensioning sleeve is sleeved on the positioning mandrel, the positioning mandrel is fixed on the dividing head box body, and two ends of the tensioning sleeve and two ends of the positioning mandrel are fixed in a sealing mode;
the brake structure comprises an oil cavity arranged between the tensioning sleeve and the outer circle of the positioning mandrel, and the positioning mandrel is provided with an oil inlet channel and an oil outlet channel which are communicated with the oil cavity;
the tensioning sleeve is sleeved on the friction sleeve, and the end part of the friction sleeve is in transmission connection with the main shaft; the friction sleeve and the tensioning sleeve have variable gaps, so that the tensioning sleeve can be driven by hydraulic pressure to expand outwards to be in contact with the inner wall of the friction sleeve, and static friction force is generated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122546929.2U CN216097517U (en) | 2021-10-22 | 2021-10-22 | High-precision electric five-axis numerical control turntable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122546929.2U CN216097517U (en) | 2021-10-22 | 2021-10-22 | High-precision electric five-axis numerical control turntable |
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| Publication Number | Publication Date |
|---|---|
| CN216097517U true CN216097517U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122546929.2U Active CN216097517U (en) | 2021-10-22 | 2021-10-22 | High-precision electric five-axis numerical control turntable |
Country Status (1)
| Country | Link |
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| CN (1) | CN216097517U (en) |
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- 2021-10-22 CN CN202122546929.2U patent/CN216097517U/en active Active
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