Novel direct-drive synchronous motor driving structure of circular sawing machine

Abstract

The utility model discloses a novel circular sawing machine direct drive type synchronous motor driving structure, which relates to the technical field of driving motors and comprises a casing, a glue filling stator winding is arranged in the casing, a rotor is rotatably arranged in the glue filling stator winding, a rotor seat is arranged in the rotor, and a taper sleeve coupling is arranged in the rotor seat. The permanent magnet synchronous motor is used for direct driving instead of an original asynchronous motor and a belt pulley, so that the size and weight of equipment are reduced, the complexity of the mechanical structure of the equipment is reduced, the energy consumption of equipment operation is reduced, and the speed regulation and control performance of the equipment is improved; meanwhile, a rotor inertia disc is designed to be installed in the motor, the rotational inertia of the motor is improved, and energy generated and consumed by rotating speed fluctuation in the saw blade cutting process is stored and released through mechanical potential energy of rotor inertia, so that the saw blade runs more stably.

Description

Technical Field

[0001] The utility model relates to the technical field of drive motors, in particular to a novel direct-drive synchronous motor drive structure for a circular saw machine. Background Art

[0002] The existing circular saw drive generally adopts an asynchronous motor drive mode, which connects the asynchronous motor shaft and the speed change box shaft through a belt and a pulley. The pulley installed on the asynchronous motor is smaller than the pulley installed on the speed change box, and the ratio of the two radii is usually 1:2. The asynchronous motor rotates to drive the gear in the speed change box to rotate, thereby driving the circular saw blade to rotate. The pulley reduction ratio is 2:1 and the speed change box reduction ratio is 6:1. Therefore, the ratio of the asynchronous motor speed to the circular saw blade speed is 12:1. The asynchronous motor drives the low-speed and high-torque saw blade to work through the high-speed and low-torque output performance. Its main defects are: the asynchronous motor has low power density and large volume, and requires a larger space for installation, which increases the weight and volume of the equipment. In addition, there is a slip in the control of the asynchronous motor, and excitation current needs to be provided, which has low operating efficiency; there is torque loss in the process of using the pulley transmission, and the belt is easy to wear, and the mechanical structure is more complicated. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a novel direct-drive synchronous motor driving structure for a circular saw machine, which solves the problems of large volume, heavy weight, low efficiency and easy belt wear in the existing driving method.

[0004] The utility model is realized through the following technical solutions.

[0005] The utility model discloses a novel direct-drive synchronous motor driving structure for a circular saw, comprising a casing, a glue-filled stator winding is arranged in the casing, the casing and the glue-filled stator winding constitute the stator part of the motor, a rotor is rotatably arranged in the glue-filled stator winding, a rotor seat is arranged in the rotor, the rotor and the rotor seat constitute the rotor part of the motor, and a taper sleeve coupling is arranged in the rotor seat.

[0006] Furthermore, a bottom plate for fixing the casing to a speed change case housing of a circular saw machine is provided on the outer side of the casing.

[0007] Furthermore, the rotor is key-matched with the rotor seat.

[0008] Furthermore, the rotor and the rotor seat are arbitrarily provided with splines and spline groove structures respectively to achieve positioning.

[0009] Furthermore, a plurality of incomplete holes and grooves are evenly distributed on the outer wall of the tapered sleeve coupling, and the incomplete holes and grooves on the tapered sleeve coupling have the same shape.

[0010] Furthermore, the inner wall of the rotor seat is evenly distributed with matching grooves corresponding to the incomplete hole grooves on the taper sleeve coupling, and the matching grooves on the inner wall of the rotor seat have the same shape.

[0011] Furthermore, the incomplete hole groove on the tapered sleeve coupling is threadedly matched with the matching groove on the rotor seat to adjust the tightness between the tapered sleeve coupling and the rotor seat.

[0012] Furthermore, an inertia disk is provided on one side of the rotor seat located on the bottom plate of the housing, and the inertia disk is fixed on the rotor seat.

[0013] Furthermore, a rotating shaft mounting hole for connecting to the output shaft of the transmission case is reserved on the tapered sleeve coupling.

[0014] The beneficial effects of the utility model are as follows: the utility model uses a permanent magnet synchronous motor for direct drive, replacing the original asynchronous motor and pulley, thereby reducing the size and weight of the equipment, reducing the complexity of the mechanical structure of the equipment, reducing the energy consumption of the equipment operation, and improving the speed regulation and control performance of the equipment; at the same time, by designing a rotor inertia disk to be installed inside the motor, the rotational inertia of the motor is increased, and the mechanical potential energy of the rotor inertia is used to store and release the energy generated and consumed by the speed fluctuation of the saw blade during the cutting process, so that the saw blade can run more smoothly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0017] Figure 2 It is an exploded schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a cross-sectional view of an embodiment of the utility model. DETAILED DESCRIPTION

[0019] Combine the following Figure 1-3 The utility model is described in detail. For the convenience of description, the directions mentioned below are defined as follows: the up, down, left, right, front and back directions mentioned below are the same as Figure 1 The up-down, left-right, front-back directions of the projection relationship itself are consistent.

[0020] Combined with Figure 1-3The novel direct-drive synchronous motor driving structure of a circular saw machine is generally implemented as follows:

[0021] The motor driving structure is composed of a taper sleeve coupling 20 , a rotor seat 30 , a rotor 40 , a glue-filled stator winding 50 , a housing 60 , a bottom plate on the housing 60 , and an inertia disk 80 .

[0022] The outer wall of the tapered sleeve coupling 20 is evenly distributed with a number of incomplete holes and grooves, and the inner wall of the rotor seat 30 is evenly distributed with matching grooves corresponding to the incomplete holes and grooves on the tapered sleeve coupling 20. The incomplete holes and grooves are evenly distributed and have exactly the same structure. The matching grooves are evenly distributed and have exactly the same structure. The incomplete holes and grooves on the tapered sleeve coupling 20 correspond to the matching grooves on the rotor seat 30 for threaded matching, which is used to adjust the tightness between the tapered sleeve coupling 20 and the rotor seat 30. The incomplete holes and the matching grooves are preferably three groups of matching structures evenly distributed on the tapered sleeve coupling 20 and the rotor seat 30. Screws are used between the incomplete holes and the matching grooves to adjust the tightness between the tapered sleeve coupling 20 and the rotor seat 30, preferably headless hexagon socket straight tube machine screws 10.

[0023] The tapered sleeve coupling 20 is provided with a shaft mounting hole for connecting the output shaft of the transmission case. After the output shaft of the transmission case is installed in the tapered sleeve coupling 20, the motor realizes the driving function of driving the output shaft of the transmission case to rotate.

[0024] The glue-filled stator winding 50 and the cast aluminum housing 60 constitute the stator part of the motor, and the rotor seat 30 and the rotor 40 form the rotor part of the motor. The driving function of the motor is completed by the cooperation between the stator part and the rotor part.

[0025] The rotor seat 30 and the rotor 40 are positioned by a keyway structure. When a spline is provided on the outer wall of the rotor seat 30, a spline groove corresponding to the spline is provided on the inner wall of the rotor 40; when a spline groove is provided on the outer wall of the rotor seat 30, a spline corresponding to the spline is provided on the inner wall of the rotor 40. Preferably, when a spline groove is provided on the outer wall of the rotor seat 30, a spline corresponding to the spline is provided on the inner wall of the rotor 40, so as to achieve keyway positioning of the rotor seat 30 and the rotor 40 and realize synchronous rotation of the rotor seat 30 and the rotor 40.

[0026] An extended bottom plate is provided on the outside of the cast aluminum casing 60, and the cast aluminum casing 60 is fixed to the speed change case housing of the circular saw machine through the bottom plate. Since the remaining components of the motor are installed in the cast aluminum casing 60, when the cast aluminum casing 60 is fixedly connected to the speed change case housing of the circular saw machine through the bottom plate, the motor is fixed to the speed change case housing of the circular saw machine. The bottom plate of the cast aluminum casing 60 and the speed change case housing of the circular saw machine are preferably fixedly connected by M10 hexagon socket screws 70 located at the four corners of the bottom plate.

[0027] An inertia disk 80 is provided on the side of the motor that is not connected to the output shaft of the transmission case. The inertia disk 80 is preferably fixedly mounted on the end face of the rotor seat 30 in the motor that is not matched with the output shaft of the transmission case, and is fixed to the rotor seat 30 by 8 M6 hexagon socket screws 90. The inertia disk 80 utilizes the space inside the motor installation without affecting the normal installation and use of the motor, and reasonably increases the rotational inertia of the motor rotor, so that the speed of the motor during rotation is more stable, and the cutting action of the circular saw blade is also more stable.

[0028] Fixed at the bottom of the rotor seat 30, after the motor is installed, the position of the inertia disk 80 is in the closed space between the motor and the transmission case, which does not affect the overall appearance and the installation of other components at the tail of the motor such as the encoder.

[0029] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with the technology in this field to understand the content of the utility model and implement it, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A novel direct-drive synchronous motor drive structure for a circular saw, characterized in that: The invention comprises a housing (60), wherein a glue-filled stator winding (50) is arranged in the housing (60), wherein the housing (60) and the glue-filled stator winding (50) constitute the stator part of the motor, wherein a rotor (40) is rotatably arranged in the glue-filled stator winding (50), wherein a rotor seat (30) is arranged in the rotor (40), wherein the rotor (40) and the rotor seat (30) constitute the rotor part of the motor, and wherein a taper sleeve coupling (20) is arranged in the rotor seat (30).

2. According to claim 1, a novel direct-drive synchronous motor drive structure for a circular saw machine is characterized in that: The outer side of the casing (60) is provided with a bottom plate for fixing the casing (60) to the speed change case housing of the circular saw machine.

3. According to claim 1, a novel direct-drive synchronous motor drive structure for a circular saw machine is characterized in that: The rotor (40) is mated with a keyway of the rotor seat (30).

4. According to claim 3, a novel direct-drive synchronous motor drive structure for a circular saw machine is characterized in that: The rotor (40) and the rotor seat (30) are arbitrarily provided with spline and spline groove structures respectively to achieve positioning.

5. According to claim 1, the novel direct-drive synchronous motor driving structure of a circular saw machine is characterized in that: The outer wall of the tapered sleeve coupling (20) is evenly distributed with a plurality of incomplete holes and grooves, and the incomplete holes and grooves on the tapered sleeve coupling (20) have the same shape.

6. The novel direct-drive synchronous motor drive structure for circular saw according to claim 4 is characterized in that: The inner wall of the rotor seat (30) is evenly distributed with matching grooves corresponding to the incomplete hole grooves on the taper sleeve coupling (20), and the matching grooves on the inner wall of the rotor seat (30) have the same shape.

7. The novel direct-drive synchronous motor drive structure for circular saw according to claim 5 is characterized in that: The incomplete hole groove on the tapered sleeve coupling (20) is threadably matched with the matching groove on the rotor seat (30) to adjust the tightness between the tapered sleeve coupling (20) and the rotor seat (30).

8. The novel direct-drive synchronous motor drive structure for circular saw according to claim 1 is characterized in that: An inertia disk (80) is provided on one side of the rotor seat (30) located on the bottom plate of the housing (60); the inertia disk (80) is fixed on the rotor seat (30).

9. The novel direct-drive synchronous motor drive structure for circular saw according to claim 1 is characterized in that: The taper sleeve coupling (20) is provided with a shaft mounting hole reserved for connecting with the output shaft of the transmission case.

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