Novel composite spindle and machine tool

Abstract

The utility model discloses a novel composite main shaft and a machine tool, comprising an electric main shaft, the electric main shaft comprises a main shaft rod, a support housing and an electromagnetic driving assembly; the supporting shell is provided with a connecting hole, the main shaft rod penetrates through the connecting hole, and the two ends of the main shaft rod extend out of the supporting shell. The electromagnetic driving assembly is arranged between the main shaft rod and the supporting shell and used for driving the main shaft rod to rotate relative to the supporting shell. The disc type motor is arranged on one side of the supporting shell; and the clutch is used for connecting or disconnecting the power output end of the disc type motor with the main shaft rod. The electromagnetic driving assembly comprises a rotor connected with the outer wall of the main shaft rod in a sleeving mode and a stator connected with the supporting shell. The stator is sleeved with the rotor, and an isolation gap is formed between the stator and the rotor. The electromagnetic driving assembly comprises a supporting sleeve, and the supporting sleeve is arranged between the supporting shell and the stator.

Description

Technical Field

[0001] This application relates to the field of machining equipment technology, specifically a novel composite spindle and machine tool. Background Technology

[0002] Machine tools are devices used to perform subtractive processing on materials for manufacturing. Early machine tools were mostly standardized equipment, with different models offering different processing capabilities. These machine tools generally possessed versatility, offering functions such as turning, milling, drilling, and grinding, and could be switched between these modes. If different sizes needed to be processed, the appropriate machine tool could be selected. Simultaneously, the spindle that drives the cutting tool or workpiece also had matching speeds and torques depending on the machine tool model.

[0003] For some machined products, the demand is very high, but standardized machine tools that require frequent switching between different tool functions are unnecessary. Customized special-purpose machine tools have emerged to address this need. These customized machine tools only require continuous processing of products of the same size and specifications.

[0004] Therefore, compared to standardized machine tools, customized special-purpose machine tools can directly select a matching motor to drive their spindle, optimizing the transmission component of the gearbox and using only gear sets or pulleys to drive the spindle. However, in the commercial market, products are classified into different grades and quality levels, corresponding to different grades of raw materials. Materials with different hardness lead to different processing difficulties. This means that when special-purpose machine tools are used to process materials with higher quality and harder materials while maintaining the same product dimensions and structural specifications, the motor power may not be able to match, resulting in limitations. Utility Model Content

[0005] This utility model addresses the above-mentioned problems by proposing a novel composite spindle and machine tool, aiming to solve the technical issues in the background art.

[0006] To achieve the above objectives, this utility model provides a novel composite spindle and machine tool, comprising:

[0007] An electric spindle includes a spindle rod, a support housing, and an electromagnetic drive assembly. The support housing has a connecting hole, through which the spindle rod passes, with both ends extending out of the support housing. The electromagnetic drive assembly is located between the spindle rod and the support housing, and is used to drive the spindle rod to rotate relative to the support housing.

[0008] A disc motor, wherein the disc motor is disposed on one side of the supporting housing;

[0009] The clutch is used to connect or disconnect the power output end of the disc motor from the main shaft.

[0010] Furthermore, the clutch includes a first connecting plate, a second connecting plate, and a moving device; the first connecting plate is connected to the main shaft, and the second connecting plate is connected to the power output end; both the side of the first connecting plate opposite to the second connecting plate and the side of the second connecting plate opposite to the first connecting plate are provided with connecting portions; the moving device moves the disc motor and the second connecting plate, so that the first connecting plate and the second connecting plate are connected or moved away; the main shaft passes through the disc motor, and the central axis of the main shaft is coaxial with the central axis of the power output end of the disc motor.

[0011] Furthermore, the electromagnetic drive assembly includes a rotor sleeved on the outer wall of the main shaft and a stator connected to the supporting housing; the stator is sleeved on the rotor, and there is an isolation gap between the two.

[0012] Furthermore, the electromagnetic drive assembly includes a support sleeve disposed between the support housing and the stator.

[0013] Furthermore, it includes a rotating connector disposed between the main shaft and the support sleeve; the rotating connector is used to support the main shaft to rotate relative to the support sleeve.

[0014] Furthermore, it includes fasteners; the rotating connector includes a first connecting part and a second connecting part that can rotate relative to each other; the fasteners are used to secure the first connecting part to the main shaft and the second connecting part to the support sleeve.

[0015] Furthermore, it includes a washer disposed within the support sleeve and located between the stator end and the rotating connector.

[0016] Furthermore, the fastener is a nut, and the outer wall of the main shaft is provided with a connecting thread corresponding to the nut.

[0017] Furthermore, the rotating connector is a bearing, and the first connecting part and the second connecting part are the inner ring and outer ring of the bearing, respectively; the inner hole of the bearing is connected to the main shaft, and the outer wall is connected to the support sleeve.

[0018] This utility model also provides a machine tool, including a novel composite spindle as described above.

[0019] Compared with existing technologies, this utility model provides a novel composite spindle and machine tool. When the machine tool requires high-speed, low-torque power, the clutch disconnects the power output end of the disc motor from the spindle, allowing the electric spindle to rotate independently. When high torque is required, the clutch connects the power output end of the disc motor to the spindle, and the disc motor and the electric spindle work together to achieve high torque output.

[0020] Compared to traditional machine tools, disc motors can output motor power to the machine tool spindle via a reducer, offering a better torque-to-weight ratio and requiring less space. Compared to ordinary motors, disc motors have a more optimized shape, providing added torque power to the spindle while also having a significantly shorter axial length. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a novel composite spindle structure according to this application.

[0022] Figure 2 This is a side view of a novel composite spindle according to this application.

[0023] Figure 3 This is an exploded view of the structure of a novel composite spindle according to this application.

[0024] Figure 4 This is a three-dimensional sectional view of a novel composite spindle according to this application.

[0025] The reference numerals in the figure are as follows: 1. Electric spindle; 110. Spindle rod; 120. Support housing; 121. Connecting hole; 130. Electromagnetic drive assembly; 131. Rotor; 132. Stator; 133. Support sleeve; 2. Disc motor; 3. Clutch; 310. First connecting disc; 315. Connecting part; 320. Second connecting disc; 4. Rotating connector; 410. First connecting part; 420. Second connecting part; 5. Fastener; 6. Washer. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model. It is understood that the accompanying drawings are provided for reference and illustration only and are not intended to limit the present utility model. The connection relationships shown in the drawings are only for clear description and do not limit the connection method.

[0027] It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component, or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. It should also be noted that, unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; as a mechanical connection or an electrical connection; or as a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention.

[0028] It should also be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] Please refer to Figure 1 - Figure 4 This embodiment provides a novel composite spindle, comprising:

[0030] An electric spindle 1 includes a spindle rod 110, a support housing 120, and an electromagnetic drive assembly 130. The support housing 120 has a connecting hole 121, through which the spindle rod 110 passes, with both ends extending out of the support housing 120. The electromagnetic drive assembly 130 is located between the spindle rod 110 and the support housing 120, and is used to drive the spindle rod 110 to rotate relative to the support housing 120.

[0031] Disc motor 2, the disc motor 2 is located on one side of the supporting housing 120;

[0032] Clutch 3 is used to connect or disconnect the power output end of the disc motor 2 from the main shaft 110.

[0033] The working principle is as follows: the electromagnetic drive assembly 130 drives the spindle 110 to rotate relative to the support housing 120. The power output end of the spindle 110 is used to connect with the workpiece clamping fixture in the machine tool or with the tool holder. When the machine tool requires high-speed, low-torque power, the clutch 3 disconnects the power output end of the disc motor 2 from the spindle 110, and the electric spindle 1 rotates independently.

[0034] When high torque is required, the clutch 3 connects the power output end of the disc motor 2 to the main shaft 110, and the disc motor 2 and the electric main shaft 1 work together to complete the output of high torque.

[0035] Thus, this new type of composite spindle, compared to traditional machine tools that output motor power to the machine tool spindle through a reducer, has a better torque-to-weight ratio and occupies less space. The disc motor 2, compared to ordinary motors, has a more optimized shape, providing torque power to the spindle 110 while also having the significant advantage of a shorter axial length.

[0036] Therefore, in situations with limited factory space, more machine tools using this new composite spindle can be deployed, increasing processing efficiency and quantity. Compared to driving the spindle rotation via external motors, gear sets, or pulleys, this reduces the number of transmission components, avoiding wear and tear and the associated costs of repair and replacement.

[0037] In this way, torque power can be flexibly switched when dealing with materials of different hardness grades.

[0038] Please refer to Figure 1 - Figure 4 The clutch 3 includes a first connecting plate 310, a second connecting plate 320, and a moving device (not shown). The first connecting plate 310 is connected to the main shaft 110, and the second connecting plate 320 is connected to the power output end. A connecting portion 315 is provided on the side of the first connecting plate 310 opposite to the second connecting plate 320, and on the side of the second connecting plate 320 opposite to the first connecting plate 310. The moving device moves the disc motor 2 and the second connecting plate 320, causing the first connecting plate 310 and the second connecting plate 320 to connect or move away from each other. The main shaft 110 passes through the disc motor 2, and the central axis of the main shaft 110 is coaxial with the central axis of the power output end of the disc motor 2. This results in high coaxiality of the power output end of the disc motor 2, the second connecting plate 320, and the main shaft 110, and strong connection stability.

[0039] In some embodiments, the connecting portion 315 is a planar gear structure.

[0040] It is worth noting that the main shaft 110 also has a second connecting disc 320. When the first connecting disc 310 and the second connecting disc 320 are not meshed by a planar gear, there is a non-contact gap between the disc motor 2, the second connecting disc 320 and the main shaft 110.

[0041] Instead of using the conventional method of connecting the disc motor 2 to its rotor via a rotating shaft, the second connecting disc 320 is directly connected to the rotor of the disc motor 2.

[0042] The moving device can be the outer housing of the clutch 3 itself. The operator only needs to push the outer housing of the clutch 3 by hand to move it to the corresponding position and then fix it to the external frame to complete the position determination of the second connecting plate 320.

[0043] The moving device can also be a cylinder, electric push rod, or other device that can provide linear motion. It is connected to the outer casing of the disc motor 2 itself, and drives the disc motor 2 and the second connecting disc 320 to move axially along the main shaft 110, so that the first connecting disc 310 and the second connecting disc 320 engage or disengage.

[0044] Of course, the main shaft 110 may not pass through the disc motor 2 and the second connecting disc 320, and the disc motor 2 may have a motor shaft connected to the second connecting disc 320.

[0045] Please refer to Figure 3 and Figure 4 The electromagnetic drive assembly 130 includes a rotor 131 sleeved on the outer wall of the main shaft 110 and a stator 132 connected to the support housing 120; the stator 132 is sleeved on the rotor 131, and there is an isolation gap between the two.

[0046] Please refer to Figure 3 and Figure 4 The electromagnetic drive assembly 130 includes a support sleeve 133, which is disposed between the support housing 120 and the stator 132.

[0047] The support sleeve 133 provides a connecting support for the installation of the stator 132.

[0048] Please refer to Figure 3 and Figure 4 It includes a rotating connector 4, which is disposed between the main shaft 110 and the support sleeve 133; the rotating connector 4 is used to support the main shaft 110 to rotate relative to the support sleeve 133.

[0049] Rotary connector 4 is used to reduce wear caused by the rotation of the main shaft 110 relative to the support housing 120.

[0050] Please refer to Figure 2- Figure 4 The fastener 5 is included; the rotating connector 4 includes a first connecting part 410 and a second connecting part 420 that can rotate relative to each other; the fastener 5 is used to fasten the first connecting part 410 to the main shaft 110 and the second connecting part 420 to the support sleeve 133.

[0051] Please refer to Figure 3 and Figure 4 It includes a washer 6, which is disposed inside the support sleeve 133 and located between the end of the stator 132 and the rotating connector 4.

[0052] There is a non-contact gap between the inner hole of the washer 6 and the main shaft 110. The outer wall of the washer 6 and the inner wall of the support sleeve 133 can be fixedly connected to prevent the stator 132 from being squeezed by the side of the rotating connector 4, and to position the stator 132.

[0053] Please refer to Figure 2 - Figure 4 The fastener 5 is a nut, and the outer wall of the main shaft 110 is provided with a connecting thread (not shown) corresponding to the nut.

[0054] There are two washers 6, two fasteners 5, and two rotating connectors 4, located at the two ports of the connecting hole 121.

[0055] Please refer to Figure 3 and Figure 4 The rotating connector 4 is a bearing, and the first connecting part 410 and the second connecting part 420 are the inner ring and outer ring of the bearing, respectively; the inner hole of the bearing is connected to the main shaft 110, and the outer wall is connected to the support sleeve 133.

[0056] Preferably, in order to better connect with and limit the bearing, the main shaft 110 and the support sleeve 133 are respectively provided with stepped portions corresponding to the inner ring and the outer ring.

[0057] This utility model also provides a machine tool (not shown), including a novel composite spindle as described above.

[0058] In the specification and claims of this application, the terms "comprising / including" and "having / including" and variations thereof are used to specify the presence of the stated features, values, steps or components, but do not exclude the presence or addition of one or more other features, values, steps, components or combinations thereof.

[0059] Some features of this invention are described in different embodiments for clarity; however, these features may also be described in combination in a single embodiment. Conversely, some features of this invention are described only in a single embodiment for brevity; however, these features may also be described individually or in any suitable combination in different embodiments.

[0060] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel composite spindle, characterized in that, include: An electric spindle, the electric spindle comprising a spindle rod, a support housing, and an electromagnetic drive assembly; The supporting housing is provided with a connecting hole, the main shaft passes through the connecting hole and extends out of the supporting housing at both ends; the electromagnetic drive assembly is located between the main shaft and the supporting housing, and is used to drive the main shaft to rotate relative to the supporting housing; A disc motor, wherein the disc motor is disposed on one side of the supporting housing; The clutch is used to connect or disconnect the power output end of the disc motor from the main shaft.

2. The novel composite spindle according to claim 1, characterized in that, The clutch includes a first connecting plate, a second connecting plate, and a moving device; the first connecting plate is connected to the main shaft, and the second connecting plate is connected to the power output end; both the side of the first connecting plate opposite to the second connecting plate and the side of the second connecting plate opposite to the first connecting plate are provided with connecting portions; the moving device moves the disc motor and the second connecting plate so that the first connecting plate and the second connecting plate are connected or moved away; the main shaft passes through the disc motor, and the central axis of the main shaft is coaxial with the central axis of the power output end of the disc motor.

3. The novel composite spindle according to claim 1, characterized in that, The electromagnetic drive assembly includes a rotor sleeved on the outer wall of the main shaft and a stator connected to the supporting housing; the stator is sleeved on the rotor, and there is an isolation gap between the two.

4. The novel composite spindle according to claim 3, characterized in that, The electromagnetic drive assembly includes a support sleeve, which is disposed between the support housing and the stator.

5. A novel composite spindle according to claim 4, characterized in that, It includes a rotating connector, which is disposed between the main shaft and the support sleeve; the rotating connector is used to support the main shaft to rotate relative to the support sleeve.

6. A novel composite spindle according to claim 5, characterized in that, Includes fasteners; the rotating connector includes a first connecting part and a second connecting part that can rotate relative to each other; the fasteners are used to secure the first connecting part to the main shaft and the second connecting part to the support sleeve.

7. A novel composite spindle according to claim 5, characterized in that, Includes a washer, which is disposed inside the support sleeve and located between the stator end and the rotating connector.

8. A novel composite spindle according to claim 6, characterized in that, The fastener is a nut, and the outer wall of the main shaft is provided with a connecting thread corresponding to the nut.

9. A novel composite spindle according to claim 6, characterized in that, The rotating connector is a bearing, and the first connecting part and the second connecting part are the inner ring and outer ring of the bearing, respectively; the inner hole of the bearing is connected to the main shaft, and the outer wall is connected to the support sleeve.

10. A machine tool, characterized in that, Including a novel composite spindle as described in any one of claims 1 to 9.

Images