阅读说明：本技术 一种3d动态聚焦z轴音圈电机 (3D dynamic focusing Z-axis voice coil motor ) 是由 杨长春 杜习占 于 2020-12-16 设计创作，主要内容包括：本发明属于激光3D加工领域,尤其是一种3D动态聚焦Z轴音圈电机,针对现有的响应时间比较长,影响实际工作速度,很难精确控制镜片的实际位置,容易因加工制造精度及装配精度等原因而造成配合间隙大小不一,进而容易造成摆动不稳定,反馈有延迟、误差的问题,现提出如下方案,其包括安装底板,所述安装底板一侧固定安装有后面板,安装底板的另一侧固定安装有前面板,所述前面板的一侧设有控制接口,前面板的另一侧安装有磁轭,所述磁轭的底部安装有盖板,安装底板的顶部设有动态镜片组,所述磁轭上连接有磁铁,动态镜片组上固定安装有线圈动子,本发明结构简单,体积小,维护简单,使用寿命更长,响应速度快,精度和重复精度高。(The invention belongs to the field of laser 3D processing, in particular to a 3D dynamic focusing Z-axis voice coil motor, which aims at solving the problems that the prior response time is long, the actual working speed is influenced, the actual position of a lens is difficult to accurately control, the fit clearance is easy to be different due to the processing and manufacturing precision, the swing is easy to be unstable, and the feedback has delay and error, and the like, the invention provides the following scheme, which comprises an installation bottom plate, wherein a rear panel is fixedly arranged on one side of the installation bottom plate, a front panel is fixedly arranged on the other side of the installation bottom plate, a control interface is arranged on one side of the front panel, a magnet yoke is arranged on the other side of the front panel, a cover plate is arranged at the bottom of the magnet yoke, a dynamic lens group is arranged at the top of the installation bottom plate, a magnet is connected on the magnet yoke, the volume is small, the maintenance is simple, the service life is longer, the response speed is high, and the precision and the repeatability are high.)

1. A3D dynamic focusing Z-axis voice coil motor comprises a mounting baseplate (7) and is characterized in that, a rear panel (3) is fixedly arranged on one side of the mounting bottom plate (7), a front panel (6) is fixedly arranged on the other side of the mounting bottom plate (7), one side of the front panel (6) is provided with a control interface (5), the other side of the front panel (6) is provided with a magnet yoke (2), a cover plate (4) is arranged at the bottom of the magnet yoke (2), a dynamic lens group (1) is arranged at the top of the mounting bottom plate (7), the magnetic yoke (2) is connected with a magnet (8), the dynamic lens group (1) is fixedly provided with a coil rotor (9), the coil rotor (9) is provided with a reading head (14) and a sliding block (15), the sliding block (15) is connected with a guide rail (13), the guide rail (13) is provided with two fixed supporting blocks (10), and the fixed supporting blocks (10) are provided with a grating ruler (12).

2. A 3D dynamic focus Z-axis voice coil motor according to claim 1, characterized in that the yoke (2) is machined from a highly magnetically permeable material.

3. A 3D dynamic focus Z-axis voice coil motor as claimed in claim 1, characterized in that the coil mover (9) is composed of an external insulated silicon or aluminum structural member and a coil.

4. A 3D dynamic focus Z-axis voice coil motor as claimed in claim 1, characterized in that the bottom of the fixed support block (10) is mounted with a mounting plate (11).

Technical Field

The invention relates to the technical field of laser 3D processing, in particular to a 3D dynamic focusing Z-axis voice coil motor.

Background

At present, most of the devices in the market are realized by driving a link mechanism and a slide block to transmit through a galvanometer motor, and specifically, the rotation (actually, the swing within a certain angle) of the motor is converted into the horizontal movement of a lens. The response time is long, the actual working speed is influenced, and the actual position of the lens is difficult to control accurately due to the fact that the swing angle of the crank and the moving displacement of the sliding block are nonlinear; meanwhile, the hinge joint of the crank and the connecting rod and the hinge joint of the connecting rod and the sliding block in the crank-connecting rod mechanism are easy to cause different fit clearances due to machining and manufacturing precision, assembly precision and the like, and further are easy to cause unstable swing and have the phenomena of delay, error and the like in feedback.

Disclosure of Invention

The invention aims to solve the problems that in the prior art, the response time is long, the actual working speed is influenced, the actual position of a lens is difficult to control accurately, the fit clearance is different due to the machining and manufacturing precision, the assembly precision and the like, the swing is unstable, and the feedback is delayed and has errors, and provides a 3D dynamic focusing Z-axis voice coil motor.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a D developments focus Z axle voice coil motor, includes mounting plate, mounting plate one side fixed mounting has the rear panel, and mounting plate's opposite side fixed mounting has the front panel, one side of front panel is equipped with the control interface, and the yoke is installed to the opposite side of front panel, the apron is installed to the bottom of yoke, and mounting plate's top is equipped with dynamic lens group, be connected with magnet on the yoke, fixed mounting has the coil active cell on the dynamic lens group, installs reading head and slider on the coil active cell, and the slider is connected with the guide rail, installs two fixed support blocks on the guide rail, installs the grating chi on the fixed support block.

Preferably, the magnetic yoke is made of high permeability magnetic material.

Preferably, the coil mover is composed of an external insulation silicon wafer or aluminum structural member and a coil.

Preferably, the bottom of the fixed supporting block is provided with a mounting plate.

Compared with the prior art, the invention has the beneficial effects that:

1. the structure is simple, the volume is small, the Z-axis driving is realized by the minimum number of parts, and only one moving part exists.

2. The maintenance is simple, and the parts are few, so that the parts do not contact with each other mechanically during movement, the abrasion of the parts is greatly reduced, the maintenance is only needed little or even not needed, and the service life is longer.

3. Without mechanical contact, the motion is smooth, the driving force is generated in the air gap, there is no friction other than the guide rail, and there is no mechanical connection or switching device.

4. The acceleration is large and the response speed is 20% faster than the prior art.

5. The precision and the repeatability precision are high, because the intermediate link influencing the precision is eliminated, the precision of the system depends on the position detection element, and a proper feedback device can reach the submicron level. At present, 2 photoelectric sensors can reach +/-1 um, and a grating sensor can reach 0.1 um.

The invention has the advantages of simple structure, small volume, simple maintenance, longer service life, high response speed and high precision and repeatability.

Drawings

Fig. 1 is a schematic structural diagram of a 3D dynamic focus Z-axis voice coil motor according to the present invention;

FIG. 2 is an exploded view of a 3D dynamic focus Z-axis voice coil motor according to the present invention;

fig. 3 is a schematic diagram of an internal structure of a 3D dynamic focus Z-axis voice coil motor according to the present invention.

In the figure: the dynamic lens comprises a 1-dynamic lens group, a 2-magnetic yoke, a 3-rear panel, a 4-cover plate, a 5-control interface, a 6-front panel, a 7-mounting bottom plate, an 8-magnet, a 9-coil rotor, a 10-fixed supporting block, an 11-mounting plate, a 12-grating ruler, a 13-guide rail, a 14-reading head and a 15-sliding block.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-3, a 3D dynamic focusing Z-axis voice coil motor, including mounting plate 7, mounting plate 7 one side fixed mounting has rear panel 3, mounting plate 7's opposite side fixed mounting has front panel 6, one side of front panel 6 is equipped with control interface 5, yoke 2 is installed to front panel 6's opposite side, apron 4 is installed to yoke 2's bottom, mounting plate 7's top is equipped with dynamic lens group 1, be connected with magnet 8 on yoke 2, fixed mounting has coil active cell 9 on the dynamic lens group 1, install reading head 14 and slider 15 on the coil active cell 9, slider 15 is connected with guide rail 13, install two fixed supporting shoe 10 on the guide rail 13, install grating chi 12 on the fixed supporting shoe 10.

In the invention, the magnetic yoke 2 is made of high magnetic conductive material, and magnetic induction lines brought by the magnet 8 are enhanced.

In the invention, the coil rotor 9 is composed of an external insulation silicon chip or aluminum structural member and a coil, the coil is continuously wound along the square structure, and the number of winding turns is determined according to the loaded load.

In the present invention, the bottom of the fixed support block 10 is mounted with a mounting plate 11.

According to the invention, the coil rotor 9 and the magnet 8 are acted by each other according to an ampere force principle, so that the coil moves axially in an air gap, the moving direction of the coil is determined by the current direction of the coil, and the coil rotor 9 drives the dynamic lens group 1 to do horizontal linear reciprocating motion through the slider 15.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.