CN209738291U

CN209738291U - Single-motor-driven 3D printing platform

Info

Publication number: CN209738291U
Application number: CN201920146769.2U
Authority: CN
Inventors: 赵永强; 李瑞超
Original assignee: Shaanxi University of Technology
Current assignee: Shaanxi University of Technology
Priority date: 2019-01-29
Filing date: 2019-01-29
Publication date: 2019-12-06
Anticipated expiration: 2029-01-29

Abstract

A3D printing platform driven by a single motor is composed of a rotating bearing, a spline group, a supporting frame, a lead screw nut device, a gear group, a motor and a base; the motor drives the inner ring of the rotary bearing to rotate through the spline group, and simultaneously drives the symmetrical lead screw nut devices at two sides to realize the lifting translation of the outer ring of the bearing through the gear group; the bearing device enables the inner ring of the bearing to rotate, and the outer ring drives the whole 3D printing platform to move axially. Can be through changing gear parameter and screw nut's parameter to adapt to different 3D printing conditions, and rotate with the lift of small feeding volume when keeping 3D print platform's stable rotation all the time, this print platform has simple structure, adjustment and maintenance advantage such as convenient.

Description

Single-motor-driven 3D printing platform

Technical Field

The utility model belongs to the technical field of the vibration material disk, a single motor drive's 3D print platform is related to realize single motor drive 3D print platform's rotation and sharp feed.

Background

3D print platform is 3D printing technique's key component, and print platform's design and control direct influence to the structural dimension and the precision of printing the article, and present most 3D print platform all adopts many degrees of freedom of many motor control motors, or utilizes the mode of conveyer belt to realize 3D print platform's removal, and it is too much not only to consume the power supply like this, makes 3D printer quality volume increase moreover.

In order to solve the defects of the prior art, the 3D printing platform driven by the single motor is particularly provided, and is used for realizing the three-coordinate motion of the 3D printing process provided by less power sources and stably and accurately moving.

disclosure of Invention

The utility model provides a single motor drive's 3D print platform is used for realizing the control to the stable accurate low energy consumption of 3D print platform motion.

The utility model adopts the following technical scheme:

A3D printing platform driven by a single motor is composed of a bearing outer ring 1, a bearing dust cover 2, a bearing inner ring 3, a sliding key 4, a supporting frame 5, a sliding key shaft 6, two lead screws 7, an incomplete straight-tooth gear 8, two complete straight-tooth gears 9, a coupler 10, a motor 11 and a base 12; the bearing outer ring 1, the bearing dust cover 2 and the bearing inner ring 3 form a rotating bearing, the bearing outer ring 1 is connected with a support frame 5 in a centering way through bolts, the support frame 5 is of a symmetrical U-shaped structure, a round table in the middle of the support frame 5 is of a hollow structure, thread through holes are formed in two sides of the support frame, two lead screws 7 are symmetrically arranged in the thread through holes in the two sides of the support frame, an optical axis part of each lead screw is assembled with two complete straight-tooth gears 9 which are symmetrically arranged in the center through a key, the bearing inner ring 3 is of a solid design, a hollow sleeve with a sliding key groove extends out of the center, one end of a sliding key shaft 6 is provided with the sliding key groove and assembled with the hollow sleeve extending out of the bearing inner ring 3 through the sliding key 4, the other end of the sliding key shaft 6 extends out of the hollow round hole in the center of the support frame 5, the incomplete straight-tooth gear, the tail end of the sliding key shaft 6 is connected with a motor 11 through a key and a coupler 10, the motor 11 is installed on the lower side of a base 12 in a centering mode through bolts, two circular grooves are symmetrically formed in the two sides of the base 12, and the tail ends of two lead screws 7 penetrate into the circular grooves and are connected with the base 12 through bearings.

The gear set is characterized in that the center of the gear set is provided with an incomplete straight-tooth gear 8 which is meshed with two symmetrical complete straight-tooth gears 9 on two sides, after the gear set is driven by a motor, the incomplete straight-tooth gear 8 rotates for a circle, and the complete straight-tooth gears 9 on two sides rotate for the circumferential distance of a plurality of teeth.

the realization method of the 3D printing platform driven by the single motor comprises the following steps: when the 3D printing platform is driven to descend by the screw nut mechanisms on the two sides by a small distance each time according to the rotation rule of the gear set, the precision of layer-by-layer accumulation in the 3D printing process is realized; the motor 11 drives the middle sliding key shaft 6 to rotate, and the middle sliding key shaft 6 drives the bearing inner ring 3 to rotate; the motor 11 drives the lead screws 7 on two sides to rotate through the gear set, and the lead screws 7 rotate to drive the 3D printing platform to intermittently lift and translate, so that the 3D printing platform slightly lifts and translates in the continuous rotating process, and stable and continuous printing is guaranteed.

The utility model discloses a single motor direct drive has reduced the power supply to gear engagement and lead screw nut mechanism control, have improved the stability of 3D print platform when the motion, have practiced thrift the energy consumption, have and print continuous high, smooth-going stable characteristics of precision.

Drawings

fig. 1 is a general block diagram of a single motor driven 3D printing platform.

Fig. 2 is a half sectional view a-a of fig. 1.

Detailed Description

The following describes the implementation of the present invention in detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, the single-motor driven 3D printing platform is composed of a bearing device, a sliding key group, a support frame, a screw nut device, a gear group, a motor and a base, wherein the bearing device is composed of a bearing outer ring 1, a bearing dust cap 2 and a bearing inner ring 3, a hollow sleeve extends out of the center of the bearing inner ring 3, and a sliding key groove is formed in an inner hole of the hollow sleeve;

the sliding key group is formed by connecting a sliding key groove in a hollow sleeve extending out of the center of the bearing inner ring 3 with a sliding key groove on one side of a sliding key shaft 6 through a sliding key 4, and the other end of the sliding key shaft 6 penetrates through a hollow round platform in the center of the support frame 5 and is connected with a motor 11 through a coupling 10;

the gear set is formed by meshing an incomplete straight-tooth gear 8 arranged on a sliding key shaft 6 at the center with complete straight-tooth gears 9 symmetrically arranged on a screw rod 7 at two sides;

The screw nut device is assembled by two screws 7 which are symmetrically arranged on two sides and thread through holes which are symmetrically arranged on two sides of the support frame 5, the other ends of the screws 7 are arranged in inner holes which are symmetrically arranged on two sides of the base 12 and are supported by bearings, and the upper side of the support frame 5 is connected with the bearing outer ring 1 through bolts.

The working process of the single-motor driven 3D printing platform comprises the following steps:

When the motor 11 rotates forwards, the motor drives the sliding key shaft 6 to rotate, the sliding key shaft 6 drives the hollow sleeve below the bearing inner ring 3 to rotate together through the sliding key 4, and the rotary motion of the 3D printing platform is realized; the teeth of the incomplete straight-tooth gear 8 on the sliding key shaft 6 are two symmetrically arranged teeth, and the complete straight-tooth gears 9 on the two centrosymmetric lead screws 7 are meshed with the incomplete straight-tooth gear 8 on the sliding key shaft 6; after the first layer is printed, the incomplete straight-tooth gears 8 rotate for one circle, the complete straight-tooth gears 9 at two ends drive the two symmetrical screw rods 7 to rotate for the circumferential distance of a plurality of teeth, the screw rods 7 drive the threaded through holes at two ends of the supporting frame 5 to descend for a slight distance, and at the moment, the supporting frame 5 drives the printing platform to descend for a slight distance to print the second layer; when the printing is finished, the motor 11 stops rotating, and when the printing is performed again, the motor 11 rotates reversely, the printing platform returns to the original position, and the printing process for the second time is performed.

The working principle of the single-motor-driven 3D printing platform is as follows:

The sliding key shaft 6 is directly driven by the single motor 11, and the movement of the screw nut is driven by the movement of the gear set to realize the up-and-down movement of the printing platform, wherein the gear set consists of an incomplete straight-tooth gear 8 in the middle and complete straight-tooth gears 9 which are symmetrical on two sides; the 3D printing platform is of a bearing type structure, the bearing inner ring 3 is of a solid hollow sleeve structure with a sliding key groove, and the bearing outer ring 1 is supported and connected by the support frame 5; when the motor 11 is started, the incomplete straight-tooth gear 8 on the sliding key shaft 6 and the complete straight-tooth gears 9 on the two symmetrically-arranged screw rods 7 which are meshed with each other are driven to rotate, the bearing inner ring 3 is driven to rotate through the transmission of the sliding key 4, the screw rod nut mechanisms which are symmetrical on two sides enable the support frame 5 to drive the bearing outer ring 1 and the whole bearing mechanism to axially move, and the three-coordinate motion of the 3D printing platform during working is achieved.

Claims

1. A single-motor-driven 3D printing platform comprises a single-drive 3D printing rotary platform device, wherein the single-drive 3D printing rotary platform device consists of a bearing outer ring (1), a bearing dust cover (2), a bearing inner ring (3), a sliding key (4), a supporting frame (5), a sliding key shaft (6), two lead screws (7), an incomplete straight-tooth gear (8), two complete straight-tooth gears (9), a coupler (10), a motor (11) and a base (12); the bearing device is characterized in that the bearing outer ring (1), the bearing dust cover (2) and the bearing inner ring (3) form a bearing device, the bearing outer ring (1) is in centering connection with the support frame (5) through bolts, the support frame (5) is of a symmetrical U-shaped structure, a round table in the middle of the support frame (5) is of a hollow structure, threaded through holes with threads are formed in two sides, two lead screws (7) are symmetrically arranged in the threaded through holes in the two sides, a complete straight-tooth gear (9) is installed on an optical axis part of each lead screw, the bearing inner ring (3) is of a solid design and extends out of a hollow sleeve with a sliding key groove from the center, one end of the sliding key shaft (6) is provided with the sliding key groove and is assembled with the hollow sleeve extending out of the bearing inner ring (3) through a sliding key (4), the other end of the sliding key shaft (6) extends out of the center of the support frame (5), the optical axis, the incomplete straight-tooth gear (8) is meshed with two complete straight-tooth gears (9) which are symmetrical on two sides, the tail end of a sliding key shaft (6) is connected with a motor (11) through a key and a coupler (10), the motor (11) is installed in a rectangular groove in the center of a base (12), two circular grooves are symmetrically arranged on two sides of the base (12), and the tail ends of two lead screws (7) penetrate into the circular grooves and are fixed through bearings.

2. The single motor driven 3D printing platform of claim 1, wherein: the incomplete straight-tooth gears (8) are meshed with the two complete straight-tooth gears (9) which are symmetrical on two sides, after the motor drives the incomplete straight-tooth gears (8) to rotate for a circle, and the complete straight-tooth gears (9) on two sides rotate for the circumferential distance of a plurality of teeth.