CN205573037U - Three -dimensional printing with biax drum linear electric motor plane directly driving moving system - Google Patents

Abstract

The utility model provides a two-axis cylinder linear motor planar direct drive motion system for three-dimensional printing, which includes a printing device, four support frames forming a quadrilateral and a motor mover, and sliding guide rail, the motor mover includes a first motor mover and a second motor mover arranged between two sets of opposite sliding guide rails; the printing device includes a motor controller, a first round The cylinder linear motor stator, the second cylinder linear motor stator and the three-dimensional printer nozzle device, the first motor mover passes through the first cylinder linear motor stator, and the second motor mover passes through the second cylinder linear motor stator.

Description

A two-axis cylindrical linear motor planar direct drive motion system for 3D printing

technical field

The utility model relates to a planar motion system, in particular to a plane direct drive motion system of a two-axis cylindrical linear motor for three-dimensional printing.

Background technique

Three-dimensional printing technology is also called rapid prototyping technology, and its basic forming principle is layer-by-layer manufacturing and layer-by-layer superposition. Therefore, the motion control system is an essential part of 3D printing technology, and the molding speed and precision of 3D printing technology are closely related to the motion system.

Most of the existing 3D printing motion control systems are built on the basis of the Cartesian coordinate system, which needs to realize linear motion in the X, Y, and Z directions. Due to technical or cost constraints, transmission mechanisms such as synchronous belts and screw rods are still used in 3D printing to convert the rotary motion of stepper/servo motors into linear motion. These transmission mechanisms have complex structures, high friction and low transmission efficiency. , The transmission gap makes it difficult to improve the accuracy, and a series of problems of small speed and acceleration. Among them, due to the characteristics of heavy load, short single stroke, long interval and need to lock, the movement in the Z-axis direction is more suitable for the use of screw and other mechanisms. Therefore, the above problems are mainly reflected in the plane motion system composed of the X and Y axes.

Utility model content

Purpose of the utility model: The technical problem to be solved by the utility model is to provide a two-axis cylinder linear motor planar direct drive motion system for three-dimensional printing for the deficiencies of the existing technology.

In order to solve the above technical problems, the utility model provides a two-axis cylindrical linear motor planar direct drive motion system for three-dimensional printing, including a printing device, four supporting frames forming a quadrilateral and motor movers, adjacent supporting machines Sliding guide rails are provided between the racks, and the motor movers include a first motor mover and a second motor mover arranged between two sets of opposite slide guide rails; the printing device includes motors arranged in sequence from top to bottom A controller, a first cylinder linear motor, a second cylinder linear motor and a three-dimensional printer nozzle device, the first motor mover passes through the first cylinder linear motor stator, and the second motor mover passes through the second cylinder Linear motor stator.

In the utility model, a frame is provided between adjacent supporting frames, a grating ruler is provided on the frame, and grating reading heads are provided at both ends of the motor mover.

In the utility model, the sliding guide rail is provided with a guide rail slider that can slide along the sliding guide rail, and the motor mover is fixed on the guide rail slider.

In the utility model, the stator of the first cylinder linear motor includes a stator core, and a circular hole is opened in the center of the stator core, and the motor mover passes through the circular hole. Sliding bearings are arranged at both ends of the circular hole. The iron core slides on the motor mover through sliding bearings.

In the utility model, the stator of the second cylindrical linear motor includes a stator core, and a circular hole is opened in the center of the stator core, and the motor mover passes through the circular hole. Sliding bearings are arranged at both ends of the circular hole. The iron core slides on the motor mover through sliding bearings.

In the utility model, the four supporting frames form a square frame.

In the utility model, the first motor mover and the second motor mover are respectively an X-axis motor mover and a Y-axis motor mover, and the X-axis motor mover and the Y-axis motor mover are perpendicular to each other.

In the utility model, the supporting frame includes a lifting motor controller and a lifting motor stator located at the lower end of the lifting motor controller, the lower end of the supporting frame is provided with a lifting motor mover, and the lifting motor mover passes through the lifting motor stator. Beneficial effects: the structure of the two-axis cylindrical linear motor planar direct drive motion system for 3D printing provided by the utility model is relatively simple, the friction between the sliding guide rail and the guide rail slider is relatively small, and the friction between the electronic mover and the stator core is relatively small , so the transmission efficiency is high, and with the grating reading head and grating ruler, the movement accuracy can be improved during automatic operation. Two sets of vertical cylindrical linear motors are used to form a planar direct drive motion system, which meets the requirements of 3D printing for motion control speed, accuracy and efficiency. At the same time, two sets of position detection in one direction can effectively improve the reliability of the system.

Description of drawings

The utility model will be further described below in conjunction with the accompanying drawings and specific embodiments, and the above-mentioned and other advantages of the utility model will become more clear.

Figure 1 is the overall structure diagram of the biaxial direct drive motion system;

Fig. 2 is a schematic diagram of a printing device;

Fig. 3 is a sectional view of a single motor;

FIG. 4 is a schematic structural view of Embodiment 2.

detailed description

The utility model will be described in detail below in conjunction with accompanying drawing.

Example 1:

As shown in the overall schematic diagram of Figure 1, the utility model includes a support frame 10, a sliding guide rail 20, a guide rail slider 30, a grating reading head 40, a grating ruler 50, a printing device 60, a motor controller 80, a biaxial cylinder linear Motor 90, first cylindrical linear motor stator 91, second cylindrical linear motor stator 92, first electric mover 930a and second electric mover 930b, wherein slide guide 20 includes first slide guide 20a, second slide guide 20b, the third sliding guide rail 20c and the fourth sliding guide rail 20d, the first sliding guide rail 20a is provided with the first guide rail slider 30a, the second sliding guide rail 20b is provided with the second rail slider 30b, and the third sliding guide rail 20c A third guide rail slider 30c is provided, a fourth guide rail slider 30d is provided on the fourth sliding guide rail 20d, and the biaxial cylindrical linear motor 90 includes a first cylindrical linear motor stator 91 and a second cylindrical linear motor stator 92, A first motor mover 930a is provided between the first guide rail slider 30a and the third guide rail slider 30c, and a second motor mover 930b is provided between the second guide rail slider 30b and the fourth guide rail slider 30d.

The dual-axis cylindrical linear motor 90 and its controller 80 described in the utility model are installed on the support frame 10, and the four sides of the support frame are equipped with sliding guide rails 20, and the two ends of the first motor mover and the second motor mover Fixed on the corresponding four guide rail sliders 30, each guide rail slider 30 is equipped with a grating reading head 40, and a grating ruler 50 is installed at the corresponding position of each frame of the supporting frame according to the movement stroke, and the signal of the grating reading head Output to the motor controller 80, the motor controller 80 is installed at the stator of the biaxial cylindrical linear motor 90.

As shown in Figure 2, the printing device 60 includes a motor controller 80, a first cylinder linear motor 91, a second cylinder linear motor 92 and a three-dimensional printer nozzle device 100 arranged in sequence from top to bottom, and the two-axis cylinder linear motor stator consists of Two sets of cylindrical linear motor stators 91 and 92 are vertically stacked up and down; the cylindrical linear motor stators 91 and 92, and the motor controller 80 are combined together by bolts or riveting, and the cylindrical linear motor stators 91 and 92 The stator windings of the three-dimensional printer are connected to the motor controller 80; the three-dimensional printer nozzle device 100 is placed under the cylindrical linear motor, and combined with the stator parts of the cylindrical linear motor stators 91 and 92 by means of bolts or riveting.

The first motor mover 930a and the second motor mover 930b are respectively an X-axis motor mover and a Y-axis motor mover, and the X-axis motor mover and the Y-axis motor mover are perpendicular to each other.

As shown in the sectional view of a single cylindrical linear motor in FIG. 3 , the single cylindrical linear motor is mainly composed of a stator core 910 , a stator winding 920 , a motor mover 930 , and a sliding bearing 940 .

The stator core 910 is made of silicon steel sheets, the X-axis cylindrical linear motor stator silicon steel sheets are stacked along the vertical Y-axis direction, the Y-axis cylindrical linear motor stator silicon steel sheets are stacked along the vertical X-axis direction; the stator iron A circular hole is opened in the center of the core, and the diameter of the circular hole is equal to the diameter of the mover plus 2 times the length of the air gap; around the central circular hole, circular slots are formed on the stator core at a certain interval, and the number of circular slots is determined by the number of motor phases and the movement The stroke is determined; the stator windings of each phase are placed in the corresponding circular slots; a set of sliding bearings are installed at both ends of the stator to play a supporting role.

The motor mover 930 is made of steel or iron casting, and is finished to ensure concentricity and surface finish, and is treated for rust prevention.

The motor controller 80 drives the corresponding X and Y axis cylindrical linear motors according to the control signals of the host computer and the position feedback signals of the four groups of grating read heads 40 . Two groups of coaxial position feedback signals back up each other. When one group fails, the system can still continue to work; when there is no failure, compare the two groups of coaxial position feedback signals in real time. The operation of the terminal is inconsistent, and the mechanical structure is faulty, and the prompt signal is output to the host computer.

Example 2:

The difference between this embodiment and Embodiment 1 is that, on the basis of including all the structures of Embodiment 1, a vertical lift structure in the Z-axis direction is also added, as shown in Figure 4, including a motor controller 70, a lift motor stator 71 and The lifting motor mover 730, the support frame 10 includes the lifting motor controller 70 and the lifting motor stator 71 positioned at the lower end of the lifting motor controller 70, the lower end of the support frame 10 is provided with the lifting motor mover 730, the lifting motor mover 730 Pass through the lifting motor stator 71. Embodiment 2 realizes the lifting and lowering of the motion system in the height direction, and cooperates with Embodiment 1 to realize the effect of three-dimensional printing.

The utility model provides a two-axis cylindrical linear motor planar direct-drive motion system for three-dimensional printing. There are many methods and approaches for realizing the technical solution. The above is only a preferred embodiment of the utility model. It should be pointed out that for For those skilled in the art, without departing from the principle of the utility model, some improvements and modifications can also be made, and these improvements and modifications should also be regarded as the protection scope of the utility model. All components that are not specified in this embodiment can be realized by existing technologies.

Claims (8)

1. a 3 D-printing twin shaft cylindrical linear motor plane directly drives motor system, it is characterized in that, four frames (10) including printing equipment (60), constituting tetragon and electric mover (930), being provided with rail plate (20) between adjacent frames (10), described electric mover (930) includes the first electric mover (930a) and the second electric mover (930b) being arranged between two groups of relative rail plates (20)；Described printing equipment (60) includes electric machine controller (80), the first cylindrical linear motor stator (91), the second cylindrical linear motor stator (92) and the three-dimensional printer ejecting device (100) set gradually from top to bottom, described first electric mover (930a) passes the first cylindrical linear motor stator (91), and the second electric mover (930b) passes the second cylindrical linear motor stator (92).

A kind of 3 D-printing twin shaft cylindrical linear motor plane the most according to claim 1 directly drives motor system, it is characterized in that, it is provided with frame between adjacent frames (10), described frame is provided with grating scale (50), and described electric mover (930) two ends are provided with grating read head (40).

A kind of 3 D-printing twin shaft cylindrical linear motor plane the most according to claim 1 directly drives motor system, it is characterized in that, described rail plate (20) is provided with the guide rail slide block (30) that can slide along rail plate (20), and described electric mover (930) is fixed on guide rail slide block (30).

A kind of 3 D-printing twin shaft cylindrical linear motor plane the most according to claim 1 directly drives motor system, it is characterized in that, described first cylindrical linear motor stator (91) includes stator core (910), described stator core (910) center has circular hole, electric mover passes circular hole, described circular hole two ends are provided with sliding bearing (940), and stator core (910) is slided on electric mover by sliding bearing (940).

A kind of 3 D-printing twin shaft cylindrical linear motor plane the most according to claim 1 directly drives motor system, it is characterized in that, described second cylindrical linear motor stator (92) includes stator core (910), described stator core (910) center has circular hole, electric mover passes circular hole, described circular hole two ends are provided with sliding bearing (940), and stator core (910) is slided on electric mover by sliding bearing.

A kind of 3 D-printing twin shaft cylindrical linear motor plane the most according to claim 1 directly drives motor system, it is characterised in that described four frames (10) form square framework.

7. directly drive motor system according to a kind of 3 D-printing twin shaft cylindrical linear motor plane described in claim 1 or 6, it is characterized in that, first electric mover (930a) and the second electric mover (930b) are respectively X-axis electric mover and y-axis motor mover, and X-axis electric mover and y-axis motor mover are mutually perpendicular to.

A kind of 3 D-printing twin shaft cylindrical linear motor plane the most according to claim 1 directly drives motor system, it is characterized in that, described frames (10) includes lifting motor controller (70) and is positioned at the lifting motor stator (71) of lifting motor controller (70) lower end, described frames (10) lower end is provided with lifting motor mover (730), and lifting motor mover (730) passes lifting motor stator (71).