Precise high-torque electric spindle

Abstract

The utility model discloses a precision high-torque motorized spindle which comprises a main body, the main body is arranged in a fixing shell in a penetrating mode, a penetrating axial cavity is formed in the main body, a core shaft is placed in the cavity, an annular motor is arranged between the core shaft and the main body and used for driving the core shaft to rotate, and a limiting assembly is arranged outside the fixing shell and used for limiting the core shaft to rotate. The lifting stroke of the body is limited through the limiting assembly. The whole torque can be effectively improved by adopting the annular motor, so that the lifting device can have larger torque at a low speed so as to better operate, and in addition, the lifting stroke of the main body can be controlled by an adjustable limiting assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of spindles, in particular to a precision high-torque electric spindle. Background Art

[0002] The spindle refers to the axis on the machine tool that drives the workpiece or tool to rotate. The spindle component is usually composed of the spindle, bearings and transmission parts (gears or pulleys). In the machine, it is mainly used to support transmission parts such as gears and pulleys, transmit motion and torque, such as the machine tool spindle; some are used to clamp workpieces, such as mandrels. Except for machine tools such as planers and broaching machines whose main motion is linear motion, most machine tools have spindle components. The motion accuracy and structural rigidity of the spindle component are important factors that determine the processing quality and cutting efficiency.

[0003] The existing mechanical spindle has low torque and cannot have high torque at low speed. Utility Model Content

[0004] In order to solve the above technical problems, a high-torque electric spindle is provided.

[0005] To achieve the above-mentioned purpose, the utility model is configured in a preferred embodiment to include a main body, which is inserted into a fixed shell, an axial cavity is provided inside the main body, and a core shaft is placed in the cavity, an annular motor is provided between the core shaft and the main body to drive the core shaft to rotate, and a limit assembly is provided outside the fixed shell to limit the lifting and lowering stroke of the main body through the limit assembly.

[0006] The utility model can be further configured as a precision high-torque electric spindle in a preferred embodiment, including a main body, wherein the main body is inserted into a fixed shell, the interior of the main body is provided with a penetrating axial cavity, and a core shaft is placed in the cavity, an annular motor is provided between the core shaft and the main body for driving the core shaft to rotate, a limit assembly is provided on the outside of the fixed shell, and the lifting stroke of the main body is limited by the limit assembly, and deep groove ball bearings and angular contact bearings are respectively provided at the upper and lower ends of the inner wall of the main body, and spacers are provided to separate the upper and lower adjacent bearings.

[0007] The utility model can be further configured as a precision high-torque electric spindle in a preferred embodiment, including a main body, wherein the main body is inserted into a fixed shell, an axial cavity is provided inside the main body, and a core shaft is placed in the cavity, an annular motor is provided between the core shaft and the main body for driving the core shaft to rotate, a limit assembly is provided outside the fixed shell, and the lifting stroke of the main body is limited by the limit assembly, deep groove ball bearings and angular contact bearings are respectively provided at the upper and lower ends of the inner wall of the main body, and spacers are provided to separate the upper and lower adjacent bearings, and an annular groove is provided on the top of the main body, which is fixed by the annular groove and the raised portion of the connecting disk.

[0008] In a preferred embodiment, the utility model can be further configured as a precision high-torque electric spindle, including a main body, which is inserted into a fixed shell, and the interior of the main body is provided with an axial cavity that penetrates through the cavity, and a core shaft is placed in the cavity, and an annular motor is provided between the core shaft and the main body for driving the core shaft to rotate, and a limit assembly is provided on the outside of the fixed shell, and the lifting stroke of the main body is limited by the limit assembly, and the upper and lower ends of the inner wall of the main body are respectively provided with deep groove ball bearings and angular contact bearings, and both are provided with spacers to separate the upper and lower adjacent bearings, and the top of the main body is provided with an annular groove, which is fixed to the raised portion of the connecting disk through the annular groove, and the limit assembly includes a lifting rod, which is fixed on a lifting plate, and the lifting plate is connected to the connecting disk, and a contact block is provided at the bottom of the lifting rod, and a toggle arm is provided on the path on both sides of the contact block.

[0009] In a preferred embodiment, the utility model can be further configured as a precision high-torque electric spindle, including a main body, the main body is inserted into a fixed shell, the interior of the main body is provided with an axial cavity that penetrates through, and a core shaft is placed in the cavity, an annular motor is provided between the core shaft and the main body for driving the core shaft to rotate, a limit assembly is provided on the outside of the fixed shell, and the lifting stroke of the main body is limited by the limit assembly, the upper and lower ends of the inner wall of the main body are respectively provided with deep groove ball bearings and angular contact bearings, and both are provided with spacers to separate the upper and lower adjacent bearings, an annular groove is provided on the top of the main body, and the annular groove is fixed with the raised portion of the connecting disk, the limit assembly includes a lifting rod, the lifting rod is fixed on the lifting sheet, the lifting sheet is connected to the connecting disk, a contact block is provided at the bottom of the lifting rod, and a toggle arm is provided on the path on both sides of the contact block, the lifting rod is divided into a sleeve and an inner shaft, the inner wall of the sleeve is provided with an internal thread, the outer wall of the inner shaft is provided with an external thread, and the inner shaft is connected by the internal and external threads.

[0010] The utility model can be further configured as a high-precision high-torque electric spindle in a preferred embodiment, including a main body, the main body is inserted into a fixed shell, the interior of the main body is provided with an axial cavity penetrating therethrough, and a core shaft is placed in the cavity, an annular motor is provided between the core shaft and the main body for driving the core shaft to rotate, a limit assembly is provided on the outside of the fixed shell, and the lifting stroke of the main body is limited by the limit assembly, and the upper and lower ends of the inner wall of the main body are respectively provided with deep groove ball bearings and angular contact bearings, and both are provided with spacers to separate the upper and lower adjacent bearings. Separated, an annular groove is provided on the top of the main body, which is fixed by the annular groove and the raised portion of the connecting disk. The limiting assembly includes a lifting rod, which is fixed on the lifting plate, and the lifting plate is connected to the connecting disk. A contact block is provided at the bottom of the lifting rod, and a toggle arm is provided on the path on both sides of the contact block. The lifting rod is divided into a sleeve and an inner shaft, the inner wall of the sleeve is provided with an internal thread, the outer wall of the inner shaft is provided with an external thread, and the inner shaft is connected by the internal and external threads. The contact blocks are provided in at least two groups, and a gap is provided between the two contact blocks.

[0011] The utility model can be further configured as a high-precision high-torque electric spindle in a preferred embodiment, including a main body, the main body is inserted into a fixed shell, the interior of the main body is provided with an axial cavity penetrating therethrough, and a core shaft is placed in the cavity, an annular motor is provided between the core shaft and the main body for driving the core shaft to rotate, a limit assembly is provided on the outside of the fixed shell, and the lifting stroke of the main body is limited by the limit assembly, the upper and lower ends of the inner wall of the main body are respectively provided with deep groove ball bearings and angular contact bearings, and both are provided with spacers to separate the upper and lower adjacent bearings, and the main body An annular groove is provided at the top, which is fixed with the raised portion of the connecting disk through the annular groove, the limiting assembly includes a lifting rod, the lifting rod is fixed on the lifting plate, the lifting plate is connected to the connecting disk, a contact block is provided at the bottom of the lifting rod, and a toggle arm is provided on the path on both sides of the contact block, the lifting rod is divided into a sleeve and an inner shaft, the inner wall of the sleeve is provided with an internal thread, the outer wall of the inner shaft is provided with an external thread, the inner shaft is connected by the internal and external threads, at least two groups of contact blocks are provided, and a gap is provided between the two contact blocks, and the upper and lower surfaces of the contact blocks are both set as inclined surfaces.

[0012] Beneficial effect: The utility model is a precision high-torque electric spindle, which adopts a ring motor to effectively improve the overall torque, so that it can have a larger torque even at low speed and can work better. In addition, it is also equipped with an adjustable limit component to control the lifting stroke of the main body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0014] Figure 1 It is a cross-sectional view of the utility model.

[0015] Figure 2 It is a schematic diagram of the external structure of the utility model.

[0016] In the figure, 1 is the main body; 2 is the fixed shell; 3 is the lifting plate; 4 is the connecting plate; 6 is the core shaft; 7 is the lifting rod; 8 is the toggle arm; and 9 is the contact block. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0018] like Figure 1 and Figure 2 As shown, a precision high-torque electric spindle includes a main body 1, which is inserted into a fixed shell 2. The interior of the main body 1 is provided with a penetrating axial cavity, and a core shaft 6 is placed in the cavity. An annular motor is arranged between the core shaft 6 and the main body 1. The annular motor here adopts a high-torque motor, which can obtain a large torque even at a low speed, and is used to drive the core shaft 6 to rotate. A limiting component is arranged on the outside of the fixed shell 2, and the lifting stroke of the main body 1 is limited by the limiting component to prevent excessive displacement of the main body 1 during lifting.

[0019] The upper and lower ends of the inner wall of the main body 1 are respectively provided with deep groove ball bearings and angular contact bearings, and both are provided with spacers to separate the upper and lower adjacent bearings to prevent the bearings from being driven when the main body 1 is raised or lowered.

[0020] The top of the main body 1 is provided with an annular groove, which is fixed with the raised portion of the connecting plate 4 to prevent it from falling off during lifting.

[0021] The limit assembly includes a lifting rod 7, which is fixed on a lifting plate 3, and the lifting plate 3 is connected to a connecting plate 4. A contact block 9 is provided at the bottom of the lifting rod 7, and a toggle arm is provided on the path on both sides of the contact block 9. During the lifting process, once the contact block 9 contacts the toggle arm 8, the toggle arm 8 will transmit a signal to the control end, and the main body 1 will not be lifted or lowered.

[0022] The lifting rod 7 is divided into a sleeve and an inner shaft. The inner wall of the sleeve is provided with an internal thread, and the outer wall of the inner shaft is provided with an external thread. The inner shaft is connected by the internal and external threads. The length of the entire lifting rod 7 can be adjusted by the threads to adapt to changes in the stroke.

[0023] At least two groups of contact blocks 9 are provided, and a gap is provided between the two contact blocks 9 . The upper and lower surfaces of the contact blocks 9 are both provided as inclined surfaces, which can facilitate contact with the toggle arm 8 to prevent jamming with the toggle arm 8 .

[0024] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity from another entity, but do not necessarily require or imply the existence of any such actual relationship or order between these entities.

[0025] The above examples are merely illustrative of the present utility model and do not constitute a limitation on the protection scope of the present utility model. All designs that are identical or similar to the present utility model fall within the protection scope of the present utility model.

Claims

1. A precision high torque electric spindle, characterized in that: The invention comprises a main body (1), wherein the main body (1) is inserted into a fixed shell (2), an axial cavity is provided inside the main body (1), a core shaft (6) is placed in the cavity, an annular motor is provided between the core shaft (6) and the main body (1), and is used to drive the core shaft (6) to rotate, and a limit assembly is provided outside the fixed shell (2), and the lifting stroke of the main body (1) is limited by the limit assembly.

2. A precision high torque electric spindle according to claim 1, characterized in that: The upper and lower ends of the inner wall of the main body (1) are respectively provided with a deep groove ball bearing and an angular contact bearing, and both are provided with a spacer sleeve to separate the upper and lower adjacent bearings.

3. A precision high torque electric spindle according to claim 2, characterized in that: The top of the main body (1) is provided with an annular groove, which is fixed by cooperating with the raised portion of the connecting disk (4).

4. A precision high torque electric spindle according to claim 3, characterized in that: The limiting assembly comprises a lifting rod (7), the lifting rod (7) being fixed on a lifting plate (3), the lifting plate (3) being connected to a connecting plate (4), a contact block (9) being arranged at the bottom of the lifting rod (7), and a toggle arm (8) being arranged on a path located on both sides of the contact block (9).

5. A precision high torque electric spindle according to claim 4, characterized in that: The lifting rod (7) is divided into a shaft sleeve and an inner shaft. The inner wall of the shaft sleeve is provided with an internal thread, and the outer wall of the inner shaft is provided with an external thread. The inner shaft is connected by means of the internal and external threads.

6. A precision high torque electric spindle according to claim 5, characterized in that: At least two groups of contact blocks (9) are provided, and a gap is provided between the two contact blocks (9).

7. A precision high torque electric spindle according to claim 6, characterized in that: The upper and lower surfaces of the contact block (9) are both configured as inclined surfaces.

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