Novel 20x20mm hybrid stepping motor with step angle of 3 degrees and assembly process
阅读说明：本技术 一种新型20x20mm的步距角3°的混合式步进电机及组装工艺 (Novel 20x20mm hybrid stepping motor with step angle of 3 degrees and assembly process ) 是由 朱金鑫 严平 于 2020-08-27 设计创作，主要内容包括：本发明提供一种新型20x20mm的步距角3°的混合式步进电机,具有螺杆固定连接后端盖、定子组件、前端盖组件,转子组件位于定子组件内,转子组件两侧安装的轴承分别架设在后端盖和前端盖组件内,丝杆轴的末端与转子组件固定,丝杆轴上螺设有螺母,波垫套在丝杆轴上,波垫顶抵在前端盖组件和其对应的轴承上,其特征在于：定子组件内有定子冲片压装成的定子铁芯,定子冲片的内孔上圆周均布有8个大齿,每个大齿端部设有3个小齿；转子组件包括由转子冲片压装成的转子铁芯,转子冲片的外圆上圆周均布有个转子小齿。本发明还提供这种电机的组装工艺。本发明使20x20mm的混合式步进电机获得较快的响应加速度和较大的推力。(The invention provides a novel 20x20mm hybrid stepping motor with a step angle of 3 degrees, which is provided with a screw fixedly connected with a rear end cover, a stator component and a front end cover component, wherein a rotor component is positioned in the stator component, bearings arranged at two sides of the rotor component are respectively erected in the rear end cover and the front end cover component, the tail end of a screw shaft is fixed with the rotor component, a nut is arranged on the screw shaft in a threaded manner, a wave pad is sleeved on the screw shaft, and the wave pad is propped against the front end cover component and the corresponding bearing thereof, and the hybrid stepping motor is characterized in that: a stator core formed by pressing stator punching sheets is arranged in the stator assembly, 8 large teeth are uniformly distributed on the circumference of an inner hole of each stator punching sheet, and the end part of each large tooth is provided with 3 small teeth; the rotor assembly comprises a rotor core formed by pressing rotor punching sheets, and rotor small teeth are uniformly distributed on the outer circle of each rotor punching sheet. The invention also provides an assembly process of the motor. The invention enables the hybrid stepping motor of 20x20mm to obtain faster response acceleration and larger thrust.)
1. The utility model provides a novel 20x20 mm's step angle 3 hybrid stepper motor, has screw rod fixed connection rear end cap, stator module, front end housing subassembly, and the rotor subassembly is located stator module, and the bearing of rotor subassembly both sides installation erects respectively in rear end cap and front end housing subassembly, and the end and the rotor subassembly of lead screw axle are fixed, and the spiral shell is equipped with the nut on the lead screw axle, and the ripples pad cover is on the lead screw axle, and the ripples pad top supports on front end housing subassembly and its bearing that corresponds, its characterized in that:
a stator core formed by pressing stator punching sheets is arranged in the stator assembly, 8 large teeth are uniformly distributed on the circumference of an inner hole of each stator punching sheet, and the end part of each large tooth is provided with 3 small teeth;
the rotor assembly comprises a rotor core formed by pressing rotor punching sheets, and rotor small teeth are uniformly distributed on the outer circle of each rotor punching sheet.
2. The assembly process of the new type 20x20mm hybrid stepping motor with a step angle of 3 ° as claimed in claim 1, comprising the following steps:
1) the stator punching sheets are pressed into a stator core, the stator core is arranged into a framework, an enameled wire is wound, and the stator assembly is formed by shaping;
2) the rotor punching sheets are pressed into a rotor core and assembled into a rotor assembly through a staggered tooth tool;
3) cleaning the inner diameter of the stator component and the outer diameter of the rotor component, and smearing anti-rust oil;
4) assembling a screw shaft onto the rotor assembly, wherein the tail end of the screw shaft is fixed with the rotor assembly by laser welding;
5) assembling two bearings to both ends of the rotor assembly;
6) the rear end cover is assembled on the stator assembly;
7) assembling the whole rotor assembly and a bearing together into a stator semi-finished product comprising a stator assembly and a rear end cover, wherein the rear bearing is erected in the rear end cover;
8) assembling a front end cover assembly and a wave pad, wherein the wave pad is sleeved on a screw rod shaft, then assembling the front end cover assembly on a stator assembly, a front bearing is erected in the front end cover assembly, and the wave pad is propped against the front end cover assembly and a corresponding front bearing;
9) assembling a screw rod, and fixedly connecting the rear end cover, the stator component and the front end cover component by the screw rod;
10) arranging the nut on the screw rod shaft in a threaded manner;
11) adjusting a pre-tightening nut in the front end cover assembly through a tool to enable the wave pad to reach a certain pre-tightening force;
12) and the whole machine tests the insulation withstand voltage and the electrical parameters.
Technical Field
The invention relates to a stepping motor, in particular to a hybrid stepping motor.
Background
The hybrid stepping motor needs to be used in different occasions, different response acceleration and thrust requirements of customers are met, the current hybrid stepping motor with the step angle of 1.8 degrees is slow in response acceleration, and the thrust of a 7.5-degree PM motor (permanent magnet synchronous motor) is insufficient.
Disclosure of Invention
The invention provides a novel 20x20mm hybrid stepping motor with a step angle of 3 degrees, which aims to solve the defects of the prior art and enable the 20x20mm hybrid stepping motor to obtain faster response acceleration and larger thrust.
The invention also provides an assembly process of the novel 20x20mm hybrid stepping motor with the step angle of 3 degrees.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a novel 20x20 mm's step angle 3 hybrid stepper motor, has screw rod fixed connection rear end cap, stator module, front end housing subassembly, and the rotor subassembly is located stator module, and the bearing of rotor subassembly both sides installation erects respectively in rear end cap and front end housing subassembly, and the end and the rotor subassembly of lead screw axle are fixed, and the spiral shell is equipped with the nut on the lead screw axle, and the ripples pad cover is on the lead screw axle, and the ripples pad top supports on front end housing subassembly and its bearing that corresponds, its characterized in that:
a stator core formed by pressing stator punching sheets is arranged in the stator assembly, 8 large teeth are uniformly distributed on the circumference of an inner hole of each stator punching sheet, and the end part of each large tooth is provided with 3 small teeth;
the rotor assembly comprises a rotor core formed by pressing rotor punching sheets, and rotor small teeth are uniformly distributed on the outer circle of each rotor punching sheet.
The novel 20x20mm step angle 3-degree hybrid stepping motor assembly process comprises the following steps:
1) the stator punching sheets are pressed into a stator core, the stator core is arranged into a framework, an enameled wire is wound, and the stator assembly is formed by shaping;
2) the rotor punching sheets are pressed into a rotor core and assembled into a rotor assembly through a staggered tooth tool;
3) cleaning the inner diameter of the stator component and the outer diameter of the rotor component, and smearing anti-rust oil;
4) assembling a screw shaft onto the rotor assembly, wherein the tail end of the screw shaft is fixed with the rotor assembly by laser welding;
5) assembling two bearings to both ends of the rotor assembly;
6) the rear end cover is assembled on the stator assembly;
7) assembling the whole rotor assembly and a bearing together into a stator semi-finished product comprising a stator assembly and a rear end cover, wherein the rear bearing is erected in the rear end cover;
8) assembling a front end cover assembly and a wave pad, wherein the wave pad is sleeved on a screw rod shaft, then assembling the front end cover assembly on a stator assembly, a front bearing is erected in the front end cover assembly, and the wave pad is propped against the front end cover assembly and a corresponding front bearing;
9) assembling a screw rod, and fixedly connecting the rear end cover, the stator component and the front end cover component by the screw rod;
10) arranging the nut on the screw rod shaft in a threaded manner;
11) adjusting a pre-tightening nut in the front end cover assembly through a tool to enable the wave pad to reach a certain pre-tightening force;
12) and the whole machine tests the insulation withstand voltage and the electrical parameters.
The invention has the advantages that:
synchronous pitch angle motor, at the same helical pitch screw rod of motor collocation, when the same pulse is sent out to the controller, 3 hybrid step motor has faster response acceleration than 1.8 hybrid step motor, moreover because hybrid step motor rotor adopts sintering neodymium iron boron magnetic steel, and the PM motor then adopts bonding neodymium iron boron magnetic steel, so have higher thrust performance than 7.5 PM motor.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a perspective view of a rotor plate of the present invention;
FIG. 2 is a perspective view of a stator lamination of the present invention;
fig. 3 is an exploded view of the complete machine assembly of the present invention.
Detailed Description
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor. In order to facilitate an understanding of the invention, the invention is described in more detail below with reference to the accompanying drawings and specific examples.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. As used in this specification, the terms "upper," "lower," "inner," "outer," "bottom," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1:
the
As shown in fig. 2:
the inner hole of the
As shown in fig. 3:
the invention relates to an assembly process of a novel 20x20mm hybrid stepping motor with a step angle of 3 degrees, which comprises the following steps:
1) the
2) the
3) cleaning the inner diameter of the stator assembly 10 and the outer diameter of the rotor assembly 18, and coating antirust oil;
4) assembling the screw shaft 14 to the rotor assembly 18, and fixing the tail end 3 of the screw shaft 14 with the rotor assembly 18 by laser welding;
5) fitting two bearings 8 to either end of the rotor assembly 18;
6) the rear end cap 15 is assembled to the stator assembly 10;
7) assembling the entire rotor assembly 18 together with the bearing 8 into a stator semi-finished product comprising the stator assembly 10 and the rear end cap 15, the rear bearing 8 being bridged within the rear end cap 15;
8) assembling a front end cover assembly 5 and a wave pad 7, sleeving the wave pad 7 on a screw rod shaft 14, assembling the front end cover assembly 5 on a stator assembly 10, erecting a front bearing 8 in the front end cover assembly 5, and propping the wave pad 7 against the front end cover assembly 5 and the corresponding front bearing 8;
9) assembling a screw rod 17, and fixedly connecting the nameplate 16, the rear end cover 15, the stator assembly 10 and the front end cover assembly 5 by using the screw rod 17;
10) screwing the nut 1 on the screw shaft 14;
11) the pre-tightening nut 4 in the front end cover assembly 5 is adjusted through a tool, so that the wave pad 7 reaches a certain pre-tightening force;
12) and the whole machine tests the insulation withstand voltage and the electrical parameters.
The structure of the finally obtained novel 20 × 20mm hybrid stepping motor with a step angle of 3 ° is as follows:
the screw 17 is fixedly connected with the nameplate 16, the rear end cover 15, the stator assembly 10 and the front end cover assembly 5.
A stator core 103 pressed by a
The rotor assembly 18 is located in the stator assembly 10, the rotor assembly 18 includes a rotor core 183 formed by pressing
Bearings 8 mounted on both sides of the rotor assembly 18 are respectively arranged in the rear end cover 15 and the front end cover assembly 5.
The end 3 of the screw shaft 14 is fixed to the rotor assembly 18 by laser welding, and the screw shaft 14 is screwed with the nut 1.
The wave pad 7 is sleeved on the screw shaft 14, and the wave pad 7 is abutted against the front end cover assembly 5 and the corresponding bearing 8.
For a hybrid stepper motor, the step angle calculation is as follows:
step angle θ 360 °/(m1 × Zr);
wherein:
m 1: running the beat number; m1 ═ k × m; m: number of motor phases, Zr: the number of rotor teeth; typically a two-phase hybrid stepper motor operates at a beat number of 4.
The step angle 3 DEG stepping motor of the invention has a step angle theta of 360 DEG/4 DEG 30 of 3 DEG
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.