Machine tool electric spindle convenient to install

Abstract

The utility model discloses a machine tool motorized spindle convenient to install, which relates to the technical field of machine tool motorized spindles and comprises a motorized spindle and an installation device, a large ball bearing is arranged on the outer side of the left end of the motorized spindle, and a small ball bearing is arranged on the outer side of the right end of the motorized spindle; wherein the mounting device comprises a buckle accessory and a flange, the buckle accessory is arranged in the flange and is in clearance fit with the flange, the buckle accessory is axially fixed with the flange, an electric spindle fixedly penetrates through the inner side of the buckle accessory, a spindle motor is arranged on the right side of the mounting device, and the right end of the electric spindle is in interference fit with the spindle motor. The main shaft motor is started to rotate, the electric main shaft can be linked to rotate, the large ball bearing and the small ball bearing rotate along the electric main shaft in a driven limiting mode, a flange on the outer side of the installation device is in butt joint with the main shaft motor to be fixed before work, then the electric main shaft is buckled on the inner side of the buckle accessory to stably rotate, and the operation of locking bolts or nuts inside is replaced.

Description

Technical Field

[0001] This utility model relates to the field of machine tool electric spindle technology, specifically to a machine tool electric spindle that is easy to install. Background Technology

[0002] High-speed electric spindles are a new technology that has emerged in the field of CNC machine tools in recent years, integrating the machine tool spindle and spindle motor into one. The main drive system of high-speed CNC machine tools eliminates belt drive and gear drive, and the machine tool spindle is directly driven by an internal electric motor, thereby shortening the length of the machine tool main drive chain to zero and realizing the "zero transmission" of the machine tool. This transmission structure form in which the spindle motor and the machine tool spindle are "integrated" makes the spindle component relatively independent from the machine tool's transmission system and overall structure, so it can be made into a "spindle unit", commonly known as an "electric spindle".

[0003] Patent CN219443457U discloses a high-speed electric spindle structure, which includes: a cutting tool, a temperature sensor, a broaching mechanism spindle, a tool change sensor, a tool internal cooling cap, a tool change hydraulic cylinder, a speed encoder, a motor coil, spindle bearings, and a shaft displacement sensor. The spindle bearings are provided in four parts, with two on each side engaging with the broaching mechanism spindle. The broaching mechanism spindle is inserted inside the motor coil and the axes are collinear. The speed encoder is installed at the right front end of the broaching mechanism spindle, etc.

[0004] The electric spindles corresponding to the above scheme are generally still fixedly connected by bolts and nuts. In order to ensure the balance of the connection, several nuts and bolts need to be symmetrically fixed and installed on one side of the electric spindle. The assembly and tightening frequency is laborious, and the nuts or bolts are easy to loosen and be lost due to long-term operation of the electric spindle. It is necessary to repeatedly replenish and reinforce the assembly parts. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a machine tool electric spindle that is easy to install, thereby solving the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a machine tool electric spindle that is easy to install, comprising an electric spindle and a mounting device. A large ball bearing is provided on the outer side of the left end of the electric spindle, and a small ball bearing is provided on the outer side of the right end of the electric spindle. The mounting device includes a ring fitting and a flange. The ring fitting is built into the flange and is clearance-fitted with the flange. The ring fitting is axially fixed to the flange. The electric spindle is fixedly inserted through the inner side of the ring fitting. A spindle motor is provided on the right side of the mounting device, and the right end of the electric spindle is interference-fitted with the spindle motor.

[0007] Preferably, the upper right corner of the spindle motor has a wire, and the stator and rotor are installed inside the spindle motor. The rotor is assembled inside the stator, and the bottom end of the wire is electrically connected to the upper right corner of the stator.

[0008] Preferably, the ring fastener includes a clamping ring, a protrusion, and a groove. The protrusion is inserted into the inner side of the clamping ring, and the groove is installed on the upper and lower sides of the shaft end of the clamping ring. The protrusion is vertically inserted into the upper groove of the groove.

[0009] Preferably, the clamp ring has constricted openings on the left and right sides to form a convex frame ring shape, which facilitates the reserved assembly space inside the clamp ring for the grooved part to fasten the protrusion.

[0010] Preferably, the vertical surface of the protrusion is rectangular, which facilitates the alignment and assembly of the upper and lower parts of the clamping ring to form a pin-like operation effect.

[0011] Preferably, the grooved part has a groove at the top center in a semi-circular fan shape, which facilitates the fastening of the grooved part with the protrusion and provides high stability, effectively replacing the operation of locking nuts and bolts.

[0012] Preferably, the outer side of the electric spindle horizontally penetrates the inner side of the spindle motor, and the right end of the electric spindle extends to the right side of the spindle motor.

[0013] Preferably, the left end of the electric spindle is fixedly connected to the inner side of the large ball bearing, and the right end of the electric spindle is fixedly connected to the inner side of the small ball bearing.

[0014] This utility model provides a machine tool electric spindle that is easy to install, and has the following beneficial effects:

[0015] This easy-to-install machine tool electric spindle can be started by the spindle motor, which will then drive the electric spindle to rotate. The large ball bearing and the small ball bearing rotate along the driven limit of the electric spindle. Before operation, the spindle motor is fixed by connecting the outer flange of the mounting device, and then the electric spindle is stably rotated by the inner fastening of the ring fitting, which replaces the operation of internal locking bolts or nuts. Attached Figure Description

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

[0017] Figure 2 This is a schematic cross-sectional view of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the installation device of this utility model;

[0019] In the diagram: 1. Electric spindle; 2. Large ball bearing; 3. Mounting device; 4. Spindle motor; 5. Small ball bearing; 6. Ring fitting; 31. Flange; 32. Rotor; 41. Stator; 42. Wire; 43. Clamping ring; 311. Protrusion; 312. Groove part; 313. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1-3 This utility model provides a machine tool electric spindle that is easy to install, including an electric spindle 1 and a mounting device 3. A large ball bearing 2 is provided on the outer side of the left end of the electric spindle 1, and a small ball bearing 5 is provided on the outer side of the right end of the electric spindle 1.

[0022] The mounting device 3 includes a ring fitting 31 and a flange 32. The ring fitting 31 is built into the flange 32 and is clearance-fitted with the flange 32. The ring fitting 31 is axially fixed to the flange 32. An electric spindle 1 is fixedly passed through the inner side of the ring fitting 31. A spindle motor 4 is provided on the right side of the mounting device 3. The right end of the electric spindle 1 is interference-fitted with the spindle motor 4. The outer side of the electric spindle 1 horizontally passes through the inner side of the spindle motor 4. The right end of the electric spindle 1 extends to the right side of the spindle motor 4. The left end of the electric spindle 1 is fixedly connected to the inner side of the large ball bearing 2, and the right end of the electric spindle 1 is fixedly connected to the inner side of the small ball bearing 5.

[0023] The spindle motor 4 starts the rotation, which in turn drives the electric spindle 1 to rotate. This allows the large ball bearing 2 and the small ball bearing 5 to rotate along the driven limit of the electric spindle 1. Before operation, the spindle motor 4 is fixed by connecting the outer flange 32 of the mounting device 3, and then the electric spindle 1 is stably rotated by the inner fastening of the ring fitting 31, which replaces the operation of internal locking bolts or nuts.

[0024] The ring fastener 31 includes a clamping ring 311, a protrusion 312, and a groove 313. The protrusion 312 is inserted into the inner side of the clamping ring 311, and the groove 313 is installed on the upper and lower sides of the shaft end of the clamping ring 311. The protrusion 312 is vertically inserted into the upper groove of the groove 313.

[0025] The clamping ring 311 has constricted openings on its left and right sides, forming a convex frame shape. This allows for pre-reserved assembly space within the clamping ring 311, enabling the grooved part 313 to engage with the protrusion 312. The protrusion 312 has a vertically shaped cuboid, facilitating the alignment and assembly of the clamping ring 311 to form a pin-like action. The grooved part 313 has a semi-circular fan-shaped groove at its top center, ensuring high stability when engaging with the protrusion 312 and effectively replacing the operation of locking nuts and bolts.

[0026] The overall installation method is as follows: the groove part 313 is first pressed against the protrusion 312, so that the groove part 313 and the protrusion 312 are symmetrically built into the clamping ring 311. Then, the electric spindle 1 is inserted horizontally and the groove part 313 is pressed together with an interference fit, thereby realizing a simple overall assembly operation.

[0027] The upper right corner of the outer side of the main spindle motor 4 is equipped with a wire 43. The stator 42 and the rotor 41 are installed inside the main spindle motor 4. The rotor 41 is assembled inside the stator 42. The bottom end of the wire 43 is electrically connected to the upper right corner of the stator 42. The rotor 41 and the electric spindle 1 are interference fit.

[0028] By connecting an external power source to the wire 43, the wire 43 is electrically connected to the stator 42, causing it to discharge onto the rotor 41. This generates an electromagnetic field that cuts the positive and negative poles of the magnetic field lines, thus realizing the power source working mode of the electric spindle 1.

[0029] The control method of this utility model is to control the device by manually starting and stopping the switch. The wiring diagram of the power element and the supply of power are common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, the control method and wiring layout will not be explained in detail.

[0030] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application.

Claims

1. A machine tool electric spindle for easy installation, characterized by: Includes an electric spindle (1) and a mounting device (3). A large ball bearing (2) is provided on the outer side of the left end of the electric spindle (1), and a small ball bearing (5) is provided on the outer side of the right end of the electric spindle (1). The mounting device (3) includes a ring fitting (31) and a flange (32). The flange (32) has the ring fitting (31) built in and it is clearance-fitted with the flange (32). The ring fitting (31) is axially fixed with the flange (32). An electric spindle (1) is fixedly passed through the inner side of the ring fitting (31). A spindle motor (4) is provided on the right side of the mounting device (3). The right end of the electric spindle (1) is interference-fitted with the spindle motor (4).

2. The machine tool electric spindle that is easy to install according to claim 1, characterized in that: The main spindle motor (4) has a wire (43) on the upper right corner of its outer side. The main spindle motor (4) has a stator (42) and a rotor (41) installed on its inner side. The rotor (41) is assembled inside the stator (42). The bottom end of the wire (43) is electrically connected to the upper right corner of the stator (42).

3. A machine tool electric spindle for easy installation according to claim 1, characterized in that: The ring fastener (31) includes a clamping ring (311), a protrusion (312), and a groove (313). The protrusion (312) is inserted into the inner side of the clamping ring (311) and the groove (313) is installed on the upper and lower sides of the shaft end of the clamping ring (311). The protrusion (312) is vertically inserted into the upper groove of the groove (313).

4. A machine tool electric spindle for easy installation according to claim 3, characterized in that: The clamp ring (311) has constricted openings on the left and right sides, forming a convex frame ring shape.

5. A machine tool electric spindle for easy installation according to claim 3, characterized in that: The vertical face of the protrusion (312) is rectangular.

6. A machine tool electric spindle for easy installation according to claim 3, characterized in that: The grooved part (313) has a groove at the top center in the shape of a semi-circular fan.

7. A machine tool electric spindle for easy installation according to claim 1, characterized in that: The electric spindle (1) extends horizontally through the inner side of the spindle motor (4) on the outside, and the right end of the electric spindle (1) extends to the right side of the spindle motor (4).

8. A machine tool electric spindle for easy installation according to claim 1, characterized in that: The left end of the electric spindle (1) is fixedly connected to the inner side of the large ball bearing (2), and the right end of the electric spindle (1) is fixedly connected to the inner side of the small ball bearing (5).

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