Integrated electric spindle box for CNC lathes

Abstract

This invention discloses an integrated electric spindle box for CNC lathes, relating to the technical field of electric spindle boxes. The invention includes a spindle body, with a positioning plate mounted on one side of the spindle body for easy mounting of the positioning plate onto the spindle body; an annular plate located on one side of the positioning plate for easy placement of the annular plate on the side of the positioning plate; and multiple arc-shaped positioning plates elastically and slidably fitted to the outer wall of the annular plate. This invention utilizes the arc-shaped positioning plates, allowing them to slide under user action, thereby positioning the annular plate on one side of the positioning plate and, via the annular plate, positioning a storage box on one side of the positioning plate. This facilitates the removal of moisture from the positioning plate side of the storage box via air vents, reducing water accumulation inside the positioning plate and making the spindle operation more convenient.

Description

Technical Field

[0001] This invention belongs to the field of electric spindle boxes, and more specifically, relates to an integrated electric spindle box for CNC lathes. Background Technology

[0002] An electric spindle is a new technology in CNC machine tools that integrates the machine tool spindle and spindle motor into one unit. The main drive system of high-speed CNC machine tools eliminates belt drives and gear drives; the machine tool spindle is directly driven by an internal electric motor, thus shortening the length of the main drive chain to zero and achieving "zero transmission" for the machine tool. This transmission structure integrates the spindle motor and the machine tool spindle into one unit. Speed ​​and angular displacement sensors (rotary encoders) are installed at the rear end of the spindle to achieve fully closed-loop control of the motor. The inner tapered hole and end face of the extended portion at the front end of the spindle are used to install and fix replaceable tool holders. The power interface is used for electrical connection with the driver. After being powered on, the rotor can directly drive the spindle to rotate. The spindle speed is changed by the frequency conversion speed regulation and vector control device of the motor, so that the spindle component is relatively independent from the transmission system and overall structure of the machine tool. When the electric spindle is processing, there are not only aluminum chips generated from processing aluminum shells, but also a lot of water splashing up. Therefore, this is a huge test for the dust and water resistance of the electric spindle. The rotor exposed on the outside of the spindle will always have gaps. After the spindle has been used for a long time, water or oil will slowly enter the spindle through the gaps, causing a series of problems such as coil burnout or loud noise.

[0003] To address these shortcomings, an integrated electric spindle box for CNC lathes is proposed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an integrated electric spindle box for CNC lathes.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] An integrated electric spindle box for CNC lathes includes a spindle body, and a positioning plate is installed on one side of the spindle body, which facilitates the installation of one side of the positioning plate on one side of the spindle body.

[0007] An annular plate located on one side of the positioning disk facilitates its placement on that side. Multiple arc-shaped positioning plates are elastically and slidably fitted to the outer wall of the annular plate, allowing the annular plate to be positioned on the positioning disk via these arc-shaped positioning plates. The inner wall of each arc-shaped positioning plate adheres to the outer wall of the positioning disk. A storage box is mounted on one side of the annular plate, facilitating its installation. Multiple air vents are evenly distributed on one side of the storage box, allowing for the exhaust of gas from inside the storage box. A flexible hose is connected to the storage box, facilitating its installation via a connecting pipe.

[0008] Optionally, the outer wall of the annular plate is provided with multiple guide holes evenly distributed therein. A guide rod is slidably fitted inside each guide hole, facilitating the sliding of one end of the guide rod within the annular plate and improving its stability during sliding. One end of the guide rod is mounted on the inner wall of the arc-shaped positioning plate, facilitating the mounting of the inner wall of the arc-shaped positioning plate onto one end of the guide rod. A first spring is installed between the inner wall of the arc-shaped positioning plate and the outer wall of the annular plate, facilitating the mounting of the first spring between them and allowing the arc-shaped positioning plate to return to its original position under the elastic action of the first spring. The first spring is sleeved around the guide rod, facilitating its placement. A connecting pipe is connected to one side of the storage box, allowing one end of the connecting pipe to be mounted on the side of the storage box and fixed inside the annular plate. The connection pipe's location inside the annular plate improves its stability during placement. A first annular post is mounted around one end of the connecting pipe, facilitating its mounting. An annular sliding plate is elastically and slidably fitted around one end of the connecting pipe, allowing it to slide around the connecting pipe and return to its original position under elastic action.

[0009] Optionally, a plurality of fixed cylinders are installed on one side of the first annular column, facilitating the installation of the fixed cylinders on one side of the first annular column. A sliding rod is slidably fitted to one end of each fixed cylinder, facilitating the sliding of the sliding rod at one end of the fixed cylinder and improving the stability of the sliding rod during sliding. One end of the sliding rod is installed at one end of the annular sliding plate, facilitating the installation of one end of the annular sliding plate on one end of the sliding rod. Two second springs are installed between one end of the annular sliding plate and one side of the first annular column, facilitating the installation of the second springs between the annular sliding plate and the first annular column, facilitating the return of the annular sliding plate to its original position under the elastic action of the second springs. The second springs are sleeved around the periphery of the fixed cylinder, facilitating the installation of the second springs on the fixed cylinder. The second spring is sleeved around the periphery of the fixed cylinder and the sliding rod, facilitating the placement of the second spring around the periphery of the sliding rod. A second annular post is installed at one end of the connecting pipe, facilitating the installation of the second annular post on one end of the connecting pipe. The inner wall of the second annular post has an internal thread. A third annular post is installed at one end of the flexible hose, facilitating the installation of the third annular post on one end of the flexible hose. The outer wall of the third annular post has an external thread, which engages with the internal thread, facilitating the engagement of the internal thread with the external thread. The outer wall of the storage box is attached to the inner wall of the positioning plate, facilitating the placement of the storage box on the inner wall of the positioning plate. Multiple air vents are arranged in a circular array, with one end of each air vent attached to one end of the main shaft.

[0010] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0011] 1. The arc-shaped positioning plate is designed to slide under the user's action, thereby positioning the ring plate on one side of the positioning disk and the storage box on the same side of the positioning disk. This facilitates the removal of moisture from the positioning disk by the storage box through the air vent, reducing the problem of water accumulation inside the positioning disk and making the spindle operation more convenient.

[0012] 2. The annular sliding plate is designed to slide around the contact point between the connecting pipe and the hose under the user's action, reducing the problem of gas leakage from the contact point and making the gas delivery process more convenient and improving the efficiency of gas delivery.

[0013] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0014] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0015] In the picture:

[0016] Figure 1 This is a three-dimensional structural schematic diagram of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of an annular plate structure according to an embodiment of the present invention;

[0018] Figure 3 for Figure 2 Schematic diagram of the structure at point A in the middle;

[0019] Figure 4 for Figure 2 Schematic diagram of the structure at point B;

[0020] Figure 5 This is a schematic diagram of the positioning disk structure according to an embodiment of the present invention;

[0021] Figure 6 for Figure 5 Schematic diagram of the structure at point C;

[0022] Figure 7 This is a cross-sectional structural diagram of an embodiment of the present invention.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] Main spindle 1, positioning plate 101;

[0025] Annular plate 2, guide hole 201, guide rod 202, arc-shaped positioning plate 203, first spring 204, storage box 205, air vent 206, connecting pipe 207, first annular column 208, fixed cylinder 209, sliding rod 210, second spring 211, annular sliding plate 212, second annular column 213.

[0026] Hose 3, third annular column 301.

[0027] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0028] The invention will now be described in further detail with reference to the accompanying drawings.

[0029] Please see Figure 1-7As shown, this embodiment provides an integrated electric spindle box for CNC lathes, including a spindle body 1, with a positioning plate 101 mounted on one side of the spindle body 1, which facilitates mounting one side of the positioning plate 101 on one side of the spindle body 1.

[0030] The annular plate 2 located on one side of the positioning disk 101 facilitates its placement on one side of the positioning disk 101. The outer wall of the annular plate 2 is elastically and slidably fitted with multiple arc-shaped positioning plates 203, which facilitates the positioning of the annular plate 2 on the positioning disk 101 by means of the arc-shaped positioning plates 203. The inner side wall of the arc-shaped positioning plates 203 is attached to the outer side wall of the positioning disk 101. A storage box 205 is installed on one side of the annular plate 2, which facilitates its installation on one side of the annular plate 2. Multiple air vents 206 are evenly distributed on one side of the storage box 205, which facilitates the exhaust of gas inside the storage box 205 through the air vents 206. A flexible hose 3 is connected to the storage box 205, which facilitates the installation of the flexible hose 3 on the storage box 205 through the connecting pipe 207.

[0031] First, pull the arc-shaped positioning plate 203. The arc-shaped positioning plate 203 drives the guide rod 202 to slide inside the guide hole 201 and stretch the first spring 204. Then, the annular plate 2 is attached to one side of the positioning disk 101. The annular plate 2 drives the storage box 205 to be placed inside the positioning disk 101. Then, the user releases the arc-shaped positioning plate 203. The arc-shaped positioning plate 203 returns to its original position under the elastic action of the first spring 204. The arc-shaped positioning plate 203 drives the guide rod 202 to slide inside the guide hole 201. The inner side wall of the arc-shaped positioning plate 203 is positioned on the outer side wall of the positioning disk 101. Then, the user slides the annular sliding plate 212. The sliding rod 210 slides inside the fixed cylinder 209 and compresses the second spring 211. Then, the hose 3 is placed at one end of the connecting pipe 207. The hose 3 is threaded onto the inner wall of the second annular post 213 through the third annular post 301. Then, the annular sliding plate 212 is released and reset under the elastic action of the second spring 211. The annular sliding plate 212 drives the sliding rod 210 to slide inside the fixed cylinder 209. Then, the gas passes through the hose 3, connecting pipe 207, and storage box 205 in sequence and is blown out from the inside of the air outlet 206, blowing out the moisture inside the main shaft 1, thereby completing the removal of moisture inside the main shaft 1.

[0032] When it is necessary to remove the annular plate 2 from one side of the positioning disk 101, first slide the annular sliding plate 212. The annular sliding plate 212 drives the sliding rod 210 to slide inside the fixed cylinder 209 and compress the second spring 211. Then rotate the hose 3. The hose 3 drives the third annular column 301 to rotate out from the second annular column 213. Then the user slides the arc-shaped positioning plate 203. The arc-shaped positioning plate 203 drives the guide rod 202 to slide inside the guide hole 201 and stretch the first spring 204. The inner side wall of the arc-shaped positioning plate 203 releases the positioning of the positioning disk 101. Then the annular plate 2 can be removed from one side of the positioning disk 101.

[0033] The arc-shaped positioning plate 203 is designed to slide under the user's action, so that the ring plate 2 is positioned on one side of the positioning disk 101 by sliding the arc-shaped positioning plate 203, and the storage box 205 is positioned on one side of the positioning disk 101 by the ring plate 2. This facilitates the storage box 205 to blow away the moisture on one side of the positioning disk 101 through the air vent 206, reducing the problem of water accumulation inside the positioning disk 101, and making the operation of the spindle 1 more convenient.

[0034] The annular sliding plate 212 is designed to slide around the contact point between the connecting pipe 207 and the hose 3 under the user's action, reducing the problem of gas overflow from the contact point between the connecting pipe 207 and the hose 3, making the gas delivery process of the connecting pipe 207 and the hose 3 more convenient, and improving the efficiency of gas delivery by the connecting pipe 207 and the hose 3.

[0035] In this embodiment, the outer wall of the annular plate 2 is evenly provided with multiple guide holes 201. A guide rod 202 is slidably fitted inside each guide hole 201, facilitating the sliding of one end of the guide rod 202 within the annular plate 2 and improving the stability of the guide rod 202 during sliding. One end of the guide rod 202 is mounted on the inner wall of the arc-shaped positioning plate 203, facilitating the mounting of the inner wall of the arc-shaped positioning plate 203 onto one end of the guide rod 202. A first spring 204 is installed between the inner wall of the arc-shaped positioning plate 203 and the outer wall of the annular plate 2, facilitating the mounting of the first spring 204 between the inner wall of the arc-shaped positioning plate 203 and the outer wall of the annular plate 2, and facilitating the reset of the arc-shaped positioning plate 203 under the elastic action of the first spring 204. The first spring 204 is sleeved on the periphery of the guide rod 202. A connecting pipe 207 is connected to one side of the storage box 205, which facilitates the installation of one end of the connecting pipe 207 on one side of the storage box 205 and fixes the connecting pipe 207 inside the annular plate 2. The connection pipe 207 is located inside the annular plate 2, which improves the stability of the connecting pipe 207 when placed. A first annular post 208 is installed on the periphery of one end of the connecting pipe 207, which facilitates the installation of the first annular post 208 on the periphery of one end of the connecting pipe 207. An annular sliding plate 212 is elastically and slidably fitted on the periphery of one end of the connecting pipe 207, which facilitates the sliding of the annular sliding plate 212 on the periphery of the connecting pipe 207. The annular sliding plate 212 returns to its original position under the action of elasticity.

[0036] In this embodiment, a plurality of fixed cylinders 209 are installed on one side of the first annular post 208, facilitating the installation of the fixed cylinders 209 on one side of the first annular post 208. A sliding rod 210 is slidably fitted to one end of each fixed cylinder 209, facilitating the sliding of the sliding rod 210 at one end of the fixed cylinder 209 and improving the stability of the sliding rod 210 during sliding. One end of the sliding rod 210 is installed on one end of the annular sliding plate 212, facilitating the installation of one end of the annular sliding plate 212 on one end of the sliding rod 210. Two second springs 211 are installed between one end of the annular sliding plate 212 and one side of the first annular post 208, facilitating the installation of the second springs 211 between the annular sliding plate 212 and the first annular post 208, and facilitating the return of the annular sliding plate 212 to its original position under the elastic action of the second springs 211. The second springs 211 are sleeved around the periphery of the fixed cylinder 209, facilitating the return of the second springs to their original position. Spring 211 is sleeved on the periphery of fixed cylinder 209, and second spring 211 is sleeved on the periphery of sliding rod 210, which facilitates the sleeved placement of second spring 211 on the periphery of sliding rod 210. One end of connecting pipe 207 is equipped with second annular post 213, which facilitates the installation of second annular post 213 on one end of connecting pipe 207. The inner side wall of second annular post 213 is provided with internal thread. One end of hose 3 is equipped with third annular post 301, which facilitates the installation of third annular post 301 on one end of hose 3. The outer side wall of third annular post 301 is provided with external thread, which engages with internal thread, facilitating the engagement of internal and external threads. The outer side wall of storage box 205 is attached to the inner side wall of positioning disk 101, which facilitates the placement of storage box 205 on the inner side wall of positioning disk 101. Multiple air vents 206 are arranged in a circular array, and one end of air vent 206 is attached to one end of main shaft 1.

[0037] It should be noted that a high-speed electric spindle consists of basic mechanical components such as a power source (motor rotor and stator), spindle (rotor shaft), front and rear bearings, cooling jacket, spindle unit housing, various connecting devices, and tool interface. The electric spindle uses a housingless motor, which is internally mounted. Its rotor is heat-fitted onto the spindle components using an interference fit, making it an integral part of the spindle. The spindle is supported by front and rear bearings, and the friction generated by the press fit achieves high torque transmission. The press fit eliminates all forms of keyed and threaded connections on the spindle, enabling precise dynamic balance of the spindle's moving parts. The motor stator is press-fitted into the cooling jacket and then fixed to the electric spindle housing via the cooling jacket. Therefore, the motor rotor directly serves as the machine tool's spindle, and the outer housing of the spindle unit is the motor base.

[0038] The overall development trend of electric spindles is: high power, high speed, and high spindle rotation accuracy. High power: Electric spindles are developing towards high-speed, high-power and low-speed, high-torque. Based on practical application needs, most CNC machine tools need to simultaneously meet the requirements of heavy cutting during low-speed roughing and finishing during high-speed cutting; therefore, electric spindles should possess the performance of low-speed, high torque, and high-speed, high power. High speed: Electric spindles continue to develop towards high speed and high rigidity. With the continuous development of electric spindle bearings and their lubrication technology, precision machining technology, and precision dynamic balancing technology, high-speed CNC machine tool electric spindles have become a common development trend. In terms of rigidity, due to the development of bearing and lubrication technology, the system rigidity of electric spindles is increasing, meeting the needs of high-speed, high-efficiency, and precision machining development in CNC machine tools. High precision: Electric spindles are further developing towards high precision, high reliability, and long lifespan. As end users place increasingly higher demands on the precision and reliability of CNC machine tools, the corresponding requirements for the precision and reliability of electric spindles are also constantly increasing. Meanwhile, thanks to the use of special precision bearings, advanced lubrication methods, and special preload application methods, the lifespan of the electric spindle has been extended, and its reliability has become increasingly higher.

[0039] This invention is not limited to the embodiments described above. Anyone should understand that structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention. Technical aspects, shapes, and structures not described in detail in this invention are all publicly known technologies.

Claims

1. An integrated electric spindle box for a CNC lathe, characterized in that, include: Main spindle (1), a positioning plate (101) is installed on one side of the main spindle (1). A ring plate (2) is located on one side of the positioning disk (101). Multiple arc-shaped positioning plates (203) are elastically and slidably fitted on the outer wall of the ring plate (2). The inner wall of the arc-shaped positioning plates (203) is attached to the outer wall of the positioning disk (101). A storage box (205) is installed on one side of the ring plate (2). Multiple air vents (206) are evenly distributed on one side of the storage box (205). A flexible hose (3) is connected to the storage box (205). Multiple guide holes (201) are evenly distributed on the outer wall of the ring plate (2). The inner walls of the guide holes (201) are... A guide rod (202) is slidably fitted onto the inner wall of the arc-shaped positioning plate (203). A first spring (204) is installed between the inner wall of the arc-shaped positioning plate (203) and the outer wall of the annular plate (2). The first spring (204) is sleeved around the guide rod (202). A connecting pipe (207) is connected to one side of the storage box (205). The connecting pipe (207) is located inside the annular plate (2). A first annular post (208) is installed around one end of the connecting pipe (207). One end of the tube (207) is elastically and slidably fitted with an annular sliding plate (212). A plurality of fixed cylinders (209) are installed on one side of the first annular column (208). A sliding rod (210) is slidably fitted to one end of each fixed cylinder (209). One end of the sliding rod (210) is installed at one end of the annular sliding plate (212). Two second springs (211) are installed between one end of the annular sliding plate (212) and one side of the first annular column (208). The second springs (211) are sleeved around the periphery of the fixed cylinder (209). The connecting pipe (207) is fitted around the sliding rod (210), and a second annular post (213) is installed at one end of the connecting pipe (207). The inner wall of the second annular post (213) is provided with an internal thread. A third annular post (301) is installed at one end of the flexible hose (3). The outer wall of the third annular post (301) is provided with an external thread. The external thread is threaded with the internal thread. The outer wall of the storage box (205) is attached to the inner wall of the positioning plate (101). A plurality of air vents (206) are arranged in a circular array. One end of the air vent (206) is attached to one end of the main shaft (1).

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