CN114189099A - Two-way shaft extension structure of slender spindle motor - Google Patents

Abstract

Translated fromChinese

本发明涉及一种细长型主轴电机的双向轴伸结构，包括转子铁芯和主轴，转子铁芯具有与主轴对应的装配通孔，主轴经过装配通孔贯通转子铁芯的前后两端并相互连接固定，主轴的后端具有用于连接加工工具的主接头，主轴的前端连接有副轴，副轴的后端具有与主轴对应的连接腔，副轴的前端具有用于连接加工工具的副接头，主轴的前端插入连接腔并通过过盈配合相互连接固定，通过在主轴上连接副轴，使转子铁芯的前后两端均可以连接加工工具，使设备可以适应更多不同使用场合，提高生产效率。

The invention relates to a bidirectional shaft extension structure of a slender spindle motor, comprising a rotor iron core and a main shaft, the rotor iron core has an assembly through hole corresponding to the main shaft, and the main shaft passes through the front and rear ends of the rotor iron core through the assembly through hole and mutually The connection is fixed, the rear end of the main shaft has a main joint for connecting the processing tool, the front end of the main shaft is connected with the auxiliary shaft, the rear end of the auxiliary shaft has a connection cavity corresponding to the main shaft, and the front end of the auxiliary shaft has a auxiliary shaft for connecting the processing tool. The front end of the main shaft is inserted into the connection cavity and connected and fixed with each other through interference fit. By connecting the auxiliary shaft on the main shaft, the front and rear ends of the rotor core can be connected with processing tools, so that the equipment can be adapted to more different occasions and improve the Productivity.

Description

Two-way shaft extension structure of slender spindle motor

Technical Field

The invention relates to the technical field of motor equipment technology, in particular to a bidirectional shaft extension structure of a slender spindle motor.

Background

Along with the development of economy, spindle motors are more and more popular in various machining industries, the spindle motors on the market are generally unidirectional shaft extension at present, the combined machining of the spindle motors by the manufacturing industry is increasingly strong, and the spindle motors are required to be provided with a double-shaft extension structure, so that a cutter can be conveniently clamped at two shaft extension ends. The existing spindle motor is long and thin in design characteristics due to the fact that high-speed operation is needed, a motor iron core needs to select a small-size lengthened rotor, and due to the limitation of the size of the inner diameter of the rotor, the diameter of a rotor shaft at one end needs to be in accordance with the size of an inner hole of the rotor, and a double-shaft extension structure cannot be made. And the processing precision is difficult to guarantee by adopting the bidirectional shaft extension which is welded and assembled at the non-shaft-extension end. Therefore, the general slender spindle motor is a unidirectional shaft extension. The cutter clamping can be only realized on a single side, and the motor needs to be replaced for secondary positioning and processing on occasions requiring two combined processing, so that the production efficiency is lower.

Therefore, further improvements are needed.

Disclosure of Invention

The present invention is directed to overcome the above-mentioned shortcomings of the prior art, and provides a bi-directional shaft extension structure of a slim spindle motor, which is intended to solve at least one of the above-mentioned technical problems in the prior art to some extent.

The purpose of the invention is realized as follows:

the utility model provides a two-way axle of slim and long type spindle motor stretches structure, including rotor core and main shaft, rotor core has the assembly through-hole that corresponds with the main shaft, the main shaft link up rotor core's front and back both ends and interconnect through the assembly through-hole and fix, the rear end of main shaft has the owner that is used for connecting the machining tool and connects, the front end of main shaft is connected with the countershaft, the rear end of countershaft has the chamber of being connected that corresponds with the main shaft, the front end of countershaft has the vice joint that is used for connecting the machining tool, the front end of main shaft inserts and connects the chamber and fix through interference fit interconnect.

And the auxiliary shaft is provided with an exhaust hole corresponding to the connecting cavity.

The auxiliary shaft is provided with exhaust holes which are symmetrically arranged, the main shaft is provided with pin holes corresponding to the exhaust holes, when the main shaft is fixedly connected with the auxiliary shaft, the axes of the exhaust holes and the pin holes are superposed and form a pin channel, and the pin channel is connected with a fixed pin.

The main shaft and the auxiliary shaft are respectively processed and molded by materials with consistent expansion coefficients.

The shaft diameters of the main joint and the auxiliary joint are equivalent to each other and are larger than the shaft diameter of the front end of the main shaft.

And the main joint and the auxiliary joint are respectively provided with thread structures in opposite directions.

And when the main shaft penetrates through the front end and the rear end of the rotor core through the assembling through hole and is fixedly connected with each other, the limiting step is abutted against the outer side position of the assembling through hole.

The processing tool is a cutter or a grinding wheel head or a saw blade, and the main joint and the auxiliary joint can be respectively connected with the same or different processing tools.

The invention has the beneficial effects that:

the auxiliary shaft is connected to the main shaft, so that the front end and the rear end of the rotor core can be connected with processing tools, the equipment can adapt to more different use occasions, and the production efficiency is improved.

Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a first embodiment of the present invention.

Fig. 3 is an exploded view of the first embodiment of the present invention.

Fig. 4 is an exploded view of the second embodiment of the present invention.

Fig. 5 is an exploded view illustrating a third embodiment of the present invention.

Fig. 6 is a schematic structural view of the first embodiment of the present invention after being assembled with a motor.

Detailed Description

The invention is further described with reference to the following figures and examples.

First embodiment

Referring to fig. 1 to 6, the bidirectional shaft extension structure of the slim spindle motor includes arotor core 1 and aspindle 2, therotor core 1 has an assembly throughhole 11 corresponding to thespindle 2, thespindle 2 penetrates through the front and rear ends of therotor core 1 through the assembly throughhole 11 and is fixedly connected to each other, the rear end of thespindle 2 has amain joint 21 for connecting a machining tool, the front end of thespindle 2 is connected to asecondary shaft 3, the rear end of thesecondary shaft 3 has aconnection cavity 32 corresponding to thespindle 2, the front end of thesecondary shaft 3 has asecondary joint 31 for connecting a machining tool, the front end of thespindle 2 is inserted into theconnection cavity 32 and is fixedly connected to each other through interference fit, and thesecondary shaft 3 is connected to thespindle 2, so that the front and rear ends of therotor core 1 can be connected to the machining tool, the device can adapt to more different use occasions, and the production efficiency is improved.

The invention solves the difficulty of the long and thin type spindle motor in the design of bidirectional shaft extension, meets the requirement of the market on the combination processing of the spindle motor, can work at two ends simultaneously, can be used by one machine, improves the processing efficiency and the processing precision, and also reduces the cost of purchasing a plurality of devices by a user.

Theauxiliary shaft 3 can be directly used by being connected with themain shaft 2, subsequent processing is not needed, the integral assembly structure is simplified, and compared with the structure that the existing general main shaft motor only has a single joint, the invention improves the adaptability and the production efficiency of the equipment.

Furthermore, theauxiliary shaft 3 is provided with anexhaust hole 33 at a position corresponding to theconnection cavity 32, and theexhaust hole 33 can exhaust gas in theconnection cavity 32 in the butt joint process of themain shaft 2 and theauxiliary shaft 3, so that the installation difficulty is reduced.

Furthermore, theauxiliary shaft 3 is provided withexhaust holes 33 which are symmetrically arranged, themain shaft 2 is provided with pin holes 22 corresponding to theexhaust holes 33, when themain shaft 2 is fixedly connected with theauxiliary shaft 3, the axes of theexhaust holes 33 and the pin holes 22 are superposed to form a pin channel, the pin channel is connected with afixed pin 4, theexhaust holes 33 can reduce the installation difficulty, and the connection strength of themain shaft 2 and theauxiliary shaft 3 can be further improved by matching with the pin holes 22 and the fixedpin 4.

Furthermore, themain shaft 2 and theauxiliary shaft 3 are respectively processed and molded by materials with consistent expansion coefficients, so that themain shaft 2 and theauxiliary shaft 3 are prevented from deforming due to cold and heat changes in subsequent use.

Further, the shaft diameters of themain joint 21 and theauxiliary joint 31 are equivalent and larger than the shaft diameter of the front end of themain shaft 2, so that the bearing capacity of themain joint 21 and theauxiliary joint 31 is increased.

Further, themain joint 21 and theauxiliary joint 31 are respectively provided with a thread structure (not marked in the figures) in opposite directions, and the thread structures can be used for connecting and fixing nuts, so that the processing tool is prevented from being accidentally disengaged, and the overall safety of the equipment is improved.

Furthermore, themain shaft 2 is provided with alimiting step 23, and when themain shaft 2 penetrates through the front end and the rear end of therotor core 1 through the assembling throughhole 11 and is fixedly connected with each other, thelimiting step 23 abuts against the outer side position of the assembling throughhole 11, so that the mounting accuracy of themain shaft 2 and therotor core 1 is improved.

Second embodiment

The present embodiment is different from the first embodiment in that: the processing tool of the bidirectional shaft extension structure of the slender spindle motor is a saw blade or a grinding wheel grinding head, themain joint 21 is connected with the saw blade, and theauxiliary joint 31 is connected with the grinding wheel grinding head.

As an equivalent synchronous transformation, themain joint 21 can be connected with a grinding wheel head, and theauxiliary joint 31 can be connected with a saw blade.

The remaining portions not described are the same as those of the first embodiment, and are not repeated here.

Third embodiment

The present embodiment is different from the first embodiment in that: the processing tools of the two-way shaft extension structure of the slender spindle motor are all saw blades, and themain joint 21 and theauxiliary joint 31 are respectively connected with the corresponding saw blades.

The remaining portions not described are the same as those of the first embodiment, and are not repeated here.

Fourth embodiment

The present embodiment is different from the first embodiment in that: the processing cutter of the two-way shaft extension structure of the slender spindle motor is a saw blade or a cutter, themain joint 21 is connected with the saw blade, and theauxiliary joint 31 is connected with the cutter.

As an equivalent synchronous transformation, themain joint 21 can be connected with a cutter, and theauxiliary joint 31 can be connected with a grinding wheel head.

The remaining portions not described are the same as those of the first embodiment, and are not repeated here.

Fifth embodiment

The present embodiment is different from the first embodiment in that: the processing tools of the two-way shaft extension structure of the slender spindle motor are all grinding wheel grinding heads, and themain joint 21 and theauxiliary joint 31 are respectively connected with the corresponding grinding wheel grinding heads.

The remaining portions not described are the same as those of the first embodiment, and are not repeated here.

The above examples are only preferred embodiments of the present invention, and other embodiments of the present invention are possible. Those skilled in the art can make equivalent changes or substitutions without departing from the spirit of the present invention, and such equivalent changes or substitutions are included in the scope set forth in the claims of the present application.

Claims (8)

Translated fromChinese

1.一种细长型主轴电机的双向轴伸结构，包括转子铁芯(1)和主轴(2)，所述转子铁芯(1)具有与主轴(2)对应的装配通孔(11)，所述主轴(2)经过装配通孔(11)贯通转子铁芯(1)的前后两端并相互连接固定，主轴(2)的后端具有用于连接加工工具的主接头(21)，其特征在于，所述主轴(2)的前端连接有副轴(3)，所述副轴(3)的后端具有与主轴(2)对应的连接腔(32)，副轴(3)的前端具有用于连接加工工具的副接头(31)，主轴(2)的前端插入连接腔(32)并通过过盈配合相互连接固定。1. A bidirectional shaft extension structure of an elongated spindle motor, comprising a rotor iron core (1) and a main shaft (2), the rotor iron core (1) having an assembly through hole (11) corresponding to the main shaft (2) , the main shaft (2) passes through the front and rear ends of the rotor core (1) through the assembly through hole (11) and is connected and fixed to each other, and the rear end of the main shaft (2) has a main joint (21) for connecting the processing tool, It is characterized in that the front end of the main shaft (2) is connected with the auxiliary shaft (3), the rear end of the auxiliary shaft (3) has a connection cavity (32) corresponding to the main shaft (2), and the auxiliary shaft (3) has a connecting cavity (32) at the rear end. The front end is provided with an auxiliary joint (31) for connecting the processing tool, and the front end of the main shaft (2) is inserted into the connection cavity (32) and is connected and fixed with each other through interference fit.2.根据权利要求1所述细长型主轴电机的双向轴伸结构，其特征在于：所述副轴(3)上对应连接腔(32)的位置设有排气孔(33)。2 . The bidirectional shaft extension structure of the slender spindle motor according to claim 1 , wherein the secondary shaft ( 3 ) is provided with an exhaust hole ( 33 ) at a position corresponding to the connection cavity ( 32 ). 3 .3.根据权利要求2所述细长型主轴电机的双向轴伸结构，其特征在于：所述副轴(3)上设有对称设置的排气孔(33)，所述主轴(2)上设有与排气孔(33)对应的销钉孔(22)，当主轴(2)与副轴(3)连接固定时，排气孔(33)和销钉孔(22)的轴心重合并形成销钉通道，所述销钉通道连接有固定销钉(4)。3. The bidirectional shaft extension structure of the slender spindle motor according to claim 2, wherein the secondary shaft (3) is provided with symmetrically arranged exhaust holes (33), and the main shaft (2) is A pin hole (22) corresponding to the exhaust hole (33) is provided. When the main shaft (2) and the auxiliary shaft (3) are connected and fixed, the axial centers of the exhaust hole (33) and the pin hole (22) coincide and form A pin channel is connected with a fixing pin (4).4.根据权利要求1所述细长型主轴电机的双向轴伸结构，其特征在于：所述主轴(2)与副轴(3)分别通过膨胀系数一致的材质加工成型。4 . The bidirectional shaft extension structure of the slender spindle motor according to claim 1 , wherein the main shaft ( 2 ) and the auxiliary shaft ( 3 ) are respectively processed and formed by materials with the same expansion coefficient. 5 .5.根据权利要求1所述细长型主轴电机的双向轴伸结构，其特征在于：所述主接头(21)和副接头(31)的轴径相当且大于主轴(2)前端的轴径。5. The bidirectional shaft extension structure of the slender spindle motor according to claim 1, characterized in that: the shaft diameters of the main joint (21) and the auxiliary joint (31) are equivalent and larger than the shaft diameter of the front end of the main shaft (2). .6.根据权利要求1所述细长型主轴电机的双向轴伸结构，其特征在于：所述主接头(21)和副接头(31)上分别设有方向相反的螺纹结构。6 . The bidirectional shaft extension structure of the slender spindle motor according to claim 1 , wherein the main joint ( 21 ) and the auxiliary joint ( 31 ) are respectively provided with thread structures in opposite directions. 7 .7.根据权利要求1所述细长型主轴电机的双向轴伸结构，其特征在于：所述主轴(2)上设有限位台阶(23)，当主轴(2)经过装配通孔(11)贯通转子铁芯(1)的前后两端并相互连接固定时，所述限位台阶(23)抵靠在装配通孔(11)的外侧位置上。7. The bidirectional shaft extension structure of the slender spindle motor according to claim 1, wherein the spindle (2) is provided with a limit step (23), when the spindle (2) passes through the assembly through hole (11) When penetrating the front and rear ends of the rotor iron core (1) and being connected and fixed with each other, the limiting step (23) abuts on the outer position of the assembling through hole (11).8.根据权利要求1所述细长型主轴电机的双向轴伸结构，其特征在于：所述加工工具为刀具或者砂轮磨头或者锯片，所述主接头(21)和副接头(31)分别可以连接相同或者不同的加工工具。8. The bidirectional shaft extension structure of the slender spindle motor according to claim 1, wherein the processing tool is a tool, a grinding wheel, or a saw blade, and the main joint (21) and the auxiliary joint (31) The same or different machining tools can be connected in each case.

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