CN211071845U - Rotor spindle connecting structure of numerical control machine tool electric spindle and numerical control machine tool electric spindle - Google Patents
Rotor spindle connecting structure of numerical control machine tool electric spindle and numerical control machine tool electric spindle Download PDFInfo
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- CN211071845U CN211071845U CN201922036633.9U CN201922036633U CN211071845U CN 211071845 U CN211071845 U CN 211071845U CN 201922036633 U CN201922036633 U CN 201922036633U CN 211071845 U CN211071845 U CN 211071845U
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Abstract
The utility model provides a rotor spindle connecting structure and digit control machine tool electric main shaft of digit control machine tool electric main shaft, include: the main shaft and the rotor are installed in a matched mode through key grooves with cones; wherein, one side of the main shaft corresponding to the rotor forms a shaft key groove and a shaft convex key, and the sides of the shaft key groove and the shaft convex key form a shaft conical surface; wherein one side that the rotor corresponds the main shaft forms rotor keyway and rotor convex key, and the avris of rotor keyway and rotor convex key forms the rotor conical surface, and wherein rotor keyway and axle convex key cooperation installation, rotor convex key and axle keyway cooperation installation, the rotor in this rotor spindle connection structure and the keyway cooperation that the main shaft adopted the area to bore, be convenient for install and maintain.
Description
Technical Field
The invention relates to a numerical control machine tool, in particular to a rotor spindle connecting structure of an electric spindle of the numerical control machine tool and the electric spindle of the numerical control machine tool.
Background
The electric main shaft is a new technology which integrates a machine tool main shaft and a main shaft motor into a whole and appears in the field of numerical control machines, and the transmission structure form of the main shaft motor and the machine tool main shaft which are combined into a whole enables a main shaft part to be relatively independent from a transmission system and an integral structure of the machine tool, and has the characteristics of high rotating speed, low noise and high precision.
The rotor of the motor adopts a press-fit method and a main shaft as a whole, namely, the connection structure of the rotor and the motor mainly has 5 modes: 1. the large interference fit is adopted, and the connection is carried out in a liquid nitrogen cold-charging mode, at the moment, holes in the main shaft and the rotor are locked, the assembly process is complex, the disassembly and the assembly are inconvenient, and if the main shaft is forcibly disassembled, parts in the electric main shaft can be damaged; 2. the rotor and the main shaft which are assembled in the way can not bear large torque, the main shaft and the rotor are easy to rotate when bearing the large torque, and the problem of loose fit caused after disassembly also exists; 3. the mounting scheme also has the problems of complex assembly and easy damage to a main shaft and a rotor due to disassembly by adopting a glue-fixing type matching mounting mode; 4. the problem of loose fit is easily caused after repeated disassembly and assembly through a flat key fit installation mode; 5. through taper fit mounting means, but the difficult size of control taper fit, the processing degree of difficulty and required precision are high, and difficult control is with a higher margin to the cost.
And the five connection modes mentioned above all have the same disadvantage: the main shaft and the rotor hole are locked but are not convenient to disassemble and assemble, and once the main shaft and the rotor hole are adopted, the precision of the rotor and the main shaft is lost, so that the processing difficulty of the electric main shaft is increased.
Disclosure of Invention
The invention aims to provide a rotor spindle connecting structure of an electric spindle of a numerical control machine tool and the electric spindle of the numerical control machine tool.
This technical scheme provides a rotor spindle connection structure of digit control machine tool electricity main shaft, includes: the main shaft and the rotor are installed in a matched mode through key grooves with cones; wherein, one side of the main shaft corresponding to the rotor forms a shaft key groove and a shaft convex key, and the sides of the shaft key groove and the shaft convex key form a shaft conical surface; wherein one side that the rotor corresponds the main shaft forms rotor keyway and rotor convex key, and the avris of rotor keyway and rotor convex key forms the rotor conical surface, and wherein rotor keyway and axle convex key cooperation installation, rotor convex key and axle keyway cooperation installation.
In some embodiments, the shaft cone surface and the opposing rotor cone surface mate with each other.
In some embodiments, a portion of one side of the spindle engaging rotor is recessed inwardly to form a spindle keyway and an opposite portion of the spindle not recessed from the spindle keyway forms a spindle lug.
In some embodiments, a portion of the rotor on a side of the shaft that engages the shaft is recessed to form a rotor keyway and a portion of the shaft that is not recessed relative to the rotor keyway forms a rotor tab.
In some embodiments, the number of rotor splines on the rotor match the number of shaft splines, and the number of rotor splines on the rotor mating head match the number of shaft splines.
In some embodiments, the mating keyways of the spindle and rotor are axisymmetrical.
In some embodiments, the rotor is connected with the main shaft in a matching way, and the other end of the rotor is fixed on the main shaft through a locking nut.
In some embodiments, the other end of the rotor is provided with a rotor baffle, wherein the rear side of the rotor baffle is provided with a lock nut, and the rotor is fixed on the main shaft through the lock nut.
In some embodiments, a rotor spindle is provided within the rotor, within which the spindle rotates.
The technical scheme provides an electric spindle of a numerical control machine tool, which comprises a rotor spindle connecting structure of the electric spindle of the numerical control machine tool.
Compared with the prior art, the technical scheme has the following characteristics and beneficial effects:
1. the main shaft and the rotor are assembled into a whole through the mutually matched bulges and the grooves, and the grooves are key grooves with cones, so that the front ends of the main shaft and the rotor are connected, and the structure can ensure the connection stability of the main shaft and the rotor and is convenient for the disassembly and the assembly of the main shaft and the rotor.
2. The tapered helical teeth are matched and connected, the locking of the main shaft and the rotor is realized ingeniously by utilizing the mechanical matching relation, and meanwhile, the structure is convenient to process, low in cost and high in efficiency.
Drawings
Fig. 1 is a schematic structural view of a rotor and a spindle of an electric spindle for a numerical control machine tool according to an embodiment of the present invention before being coupled.
Fig. 2 is a schematic structural view of a rotor and a spindle of an electric spindle for a numerical control machine tool according to an embodiment of the present invention after being coupled.
Fig. 3 is a schematic sectional view of a rotor and spindle connecting structure of an electric spindle for a numerical control machine tool according to an embodiment of the present invention.
In the figure: 10-rotor, 111-rotor keyway, 112-rotor lug, 113-rotor cone, 12-rotor mandrel, 13-rotor baffle, 14-lock nut, 20-spindle, 211-shaft keyway, 212-shaft lug, 213-shaft cone.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in an orientation or positional relationship indicated in the drawings for ease of description and simplicity of description, and do not indicate or imply that the referenced devices or components must be constructed and operated in a particular orientation and thus are not to be considered limiting.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
This scheme provides a rotor spindle connection structure of digit control machine tool electricity main shaft, and wherein rotor and main shaft make things convenient for the dismantlement of rotor and main shaft when realizing zonulae occludens through the keyway cooperation installation of taking the awl, and this rotor spindle connection structure can be applied to on the digit control machine tool electricity main shaft.
As shown in fig. 1, the rotor spindle connection structure provided in the present technical solution includes:
the main shaft (20) and the rotor (10) are installed in a matching way by adopting tapered key grooves; wherein, a shaft key groove (211) and a shaft convex key (212) are formed on one side of the main shaft (20) corresponding to the rotor (10), and a shaft conical surface (213) is formed on the sides of the shaft key groove (211) and the shaft convex key (212); wherein, one side of the rotor (10) corresponding to the main shaft (20) forms a rotor key groove (111) and a rotor convex key (112), and the sides of the rotor key groove (111) and the rotor convex key (112) form a rotor conical surface (113), wherein the rotor key groove (111) and the shaft convex key (212) are installed in a matching way, and the rotor convex key (112) and the shaft key groove (211) are installed in a matching way.
In the embodiment of the technical scheme, the shaft conical surface (213) and the opposite rotor conical surface (113) are matched with each other to play a role in stable connection.
The conical surfaces on the shaft conical surface (213) and the rotor conical surface (113) are provided with a certain inclination, and when the main shaft (20) rotates, the arrangement of the shaft conical surface (213) and the rotor conical surface (113) stabilizes the movement of the main shaft (20) in the radial direction.
It is worth mentioning that one side part of the main shaft (20) matched with the rotor (10) is inwards sunken to form a shaft key groove (211), and a shaft convex key (212) is formed relative to the part, which is not sunken, of the shaft key groove (211), so that the joint of the shaft key groove (211) and the shaft convex key (212) is provided with the same shaft conical surface (213).
Correspondingly, one side part of the rotor (10) matched with the main shaft (20) is inwards sunken to form a rotor key groove (111), and a part which is not sunken relative to the rotor key groove (111) forms a rotor convex key (112), so that the joint of the rotor key groove (111) and the rotor convex key (112) can also have the same rotor conical surface (113).
In addition, in the embodiment of the technical scheme, at least one shaft key groove (211) is formed in the main shaft (20), and the number of the rotor convex keys (112) on the rotor (10) is matched with that of the shaft key grooves (211); at least one shaft convex key (212) is arranged on the main shaft (20), and the number of the rotor key grooves (111) on the rotor (10) is matched with that of the shaft convex keys (212).
The matching key grooves of the main shaft (20) and the rotor (10) are in an axisymmetrical structure, namely, the arrangement of the shaft key groove (211) and the shaft convex key (212) on the main shaft is symmetrical relative to the central axis of the main shaft matching head (21).
As shown in figure 3, the rotor (10) is matched and connected with the main shaft (20), and the other end of the rotor (10) is fixed on the main shaft (20) through a locking nut (14).
Specifically, the other end of the rotor (10) is provided with a rotor baffle (13), wherein the rotor baffle (13) can limit the position of the rotor (10), the rear side of the rotor baffle (13) is provided with a locking nut (14), and the rotor (10) is fixed on the main shaft (20) through the locking nut (14).
In addition, a rotor mandrel (12) is arranged in the rotor (10), and the main shaft (20) is sleeved on the rotor mandrel (12) to rotate.
According to another aspect of the present invention, the present invention provides an electric spindle of a numerically controlled machine tool, which includes therein the aforementioned rotor spindle connecting structure.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone in the light of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as those of the present application, fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a rotor spindle connection structure of digit control machine tool electricity main shaft which characterized in that includes:
the spindle (20) and the rotor (10) are installed in a matched mode through a key groove with a cone; wherein, a shaft key groove (211) and a shaft convex key (212) are formed on one side of the main shaft (20) corresponding to the rotor (10), and a shaft conical surface (213) is formed on the sides of the shaft key groove (211) and the shaft convex key (212); wherein, one side of the rotor (10) corresponding to the main shaft (20) forms a rotor key groove (111) and a rotor convex key (112), and the sides of the rotor key groove (111) and the rotor convex key (112) form a rotor conical surface (113), wherein the rotor key groove (111) and the shaft convex key (212) are installed in a matching way, and the rotor convex key (112) and the shaft key groove (211) are installed in a matching way.
2. The rotor spindle connecting structure of an electric spindle for a numerical control machine tool according to claim 1, wherein the shaft cone surface (213) and the opposite rotor cone surface (113) are fitted to each other.
3. The rotor spindle connecting structure of an electric spindle for a numerical control machine tool according to claim 1, wherein a portion of the spindle (20) at a side to which the rotor (10) is fitted is inwardly recessed to form a spindle key groove (211), and a portion not recessed with respect to the spindle key groove (211) forms a spindle projecting key (212).
4. The rotor spindle connecting structure of an electric spindle for a numerical control machine tool according to claim 1, wherein a portion of the rotor (10) at a side to be fitted to the spindle (20) is recessed inwardly to form a rotor key groove (111), and a portion not recessed with respect to the rotor key groove (111) forms a rotor convex key (112).
5. The rotor spindle connection structure of an electric spindle for a numerical control machine tool according to claim 1, wherein the number of rotor keys (112) on the rotor (10) matches the number of shaft key slots (211), and the number of rotor key slots (111) on the rotor (10) matches the number of shaft keys (212).
6. The rotor spindle connection structure of an electric spindle for numerical control machine tools according to claim 1, characterized in that the mating keyways of the spindle (20) and the rotor (10) are axisymmetric.
7. The rotor spindle connection structure according to claim 1, wherein the key groove of the rotor (10) is fittingly connected with the spindle (20), and the other end of the rotor (10) is fixed on the spindle (20) by a lock nut (14).
8. The rotor spindle connecting structure of an electric spindle of a numerical control machine according to claim 7, characterized in that the other end of the rotor (10) is provided with a rotor guard (13), wherein a lock nut (14) is provided at the rear side of the rotor guard (13), and the rotor (10) is fixed on the spindle (20) by the lock nut (14).
9. The rotor spindle connection structure of an electric spindle for numerical control machine tools according to claim 7, characterized in that a rotor spindle (12) is provided in the rotor (10), and the spindle (20) rotates in the rotor spindle (12).
10. A numerically controlled machine tool electric spindle comprising a rotor spindle connecting structure of a numerically controlled machine tool electric spindle according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036633.9U CN211071845U (en) | 2019-11-22 | 2019-11-22 | Rotor spindle connecting structure of numerical control machine tool electric spindle and numerical control machine tool electric spindle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922036633.9U CN211071845U (en) | 2019-11-22 | 2019-11-22 | Rotor spindle connecting structure of numerical control machine tool electric spindle and numerical control machine tool electric spindle |
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| CN211071845U true CN211071845U (en) | 2020-07-24 |
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| CN201922036633.9U Active CN211071845U (en) | 2019-11-22 | 2019-11-22 | Rotor spindle connecting structure of numerical control machine tool electric spindle and numerical control machine tool electric spindle |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732688A (en) * | 2019-11-22 | 2020-01-31 | 台州市神鹰机床有限公司 | Rotor spindle connecting structure of numerical control machine tool electric spindle and application thereof |
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2019
- 2019-11-22 CN CN201922036633.9U patent/CN211071845U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110732688A (en) * | 2019-11-22 | 2020-01-31 | 台州市神鹰机床有限公司 | Rotor spindle connecting structure of numerical control machine tool electric spindle and application thereof |
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