CN203456989U

CN203456989U - Hollow stepping motor embedded with spline shaft

Info

Publication number: CN203456989U
Application number: CN201320591241.9U
Authority: CN
Inventors: 付玉磊; 李向前; 万鑫; 张晋
Original assignee: GIT (TIANJIN) TECHNOLOGY DEVELOPMENT Co Ltd
Current assignee: Gti Tianjin Technology Development Co ltd
Priority date: 2013-09-23
Filing date: 2013-09-23
Publication date: 2014-02-26
Anticipated expiration: 2023-09-23

Abstract

The utility model discloses a hollow stepping motor embedded with a spline shaft. The spline shaft crosses through a spline shaft sleeve and is slidingly matched with the spline shaft sleeve. The spline shaft is provided with a through hole in the axial direction. Jump ring grooves are arranged at the two ends of the spline shaft, and an upper jump ring and a lower jump ring are respectively disposed inside the two jump ring grooves. A hollow rotating shaft is embedded with the spline shaft sleeve, and the spline shaft sleeve is tightly matched with the hollow rotating shaft trough a key slot. The upper jump ring can be in abutting fit with the upper end of the spline shaft sleeve. A spring is arranged at a position, between the lower jump ring and the lower end of the spline shaft sleeve, on the spline shaft. The hollow rotating shaft crosses through a rotor and is disposed inside the rotor. The two ends of the hollow rotating shaft are respectively supported on an upper end cover and a lower end cover through two bearings which are concentrically arranged. The input end of the hollow rotating shaft is protruded from the upper end cover, the output end of the hollow rotating shaft is disposed inside the lower end cover, and the upper end cover and the lower end cover are fixedly connected with a motor housing. By employing the hollow stepping motor embedded with the spline shaft, damage to a sucked object to be carried due to gravity and acceleration is prevented when the sucked object to be carried is in contact with spline shaft additional mechanisms.

Description

Embedded splined shaft hollow stepping motor

Technical field

The utility model relates to a kind of motor, relates in particular to a kind of embedded splined shaft hollow stepping motor.

Background technology

In prior art, similar stepping motor product is mainly by rotating shaft, before, rear end cap, casing, the composition such as rotor and bearing, its shaft mostly is solid spindle, in minority motor, also have in axle with holes, but aperture is less can only be as the passage that passes through gas or liquid, in actual applications, usually can run into such demand: the compensation that realizes again angle in a little space after the light little device not damaged of precision will being picked up is rotated, if do the design of this function by traditional mentality of designing, not only the complicated volume of mechanism is large, and concentric precision is also difficult to guarantee.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of miniaturization, lightness, high-precision embedded splined shaft hollow stepping motor are provided.

Embedded splined shaft hollow stepping motor of the present utility model, splined shaft is slidably matched through hub splines and with hub splines, at described splined shaft, axially have a through hole, at described splined shaft two ends, be provided with jump-ring slot, in the jump-ring slot described in two, be separately installed with, lower circlip, described hub splines is embedded in hollow rotating shaft and by keyway and hollow rotating shaft and closely cooperates, upper jump ring can hold out against and coordinate with the upper end of hub splines, on the splined shaft between lower circlip and the lower end of hub splines, be provided with spring, described hollow rotating shaft axially runs through and is arranged in rotor along it, two bearings that arrange are with one heart passed through respectively on upper end cover and bottom end cover in hollow rotating shaft two ends, the input of described hollow rotating shaft protrudes from upper end cover setting, described hollow rotating shaft output is arranged in bottom end cover, described upper end cover is fixedly connected with motor housing with bottom end cover.

Employing the beneficial effects of the utility model are: structural design is more reasonable, from splined shaft, the hole of break-through can make fluid pass through by pipeline, good airproof performance, only need add the pipeline of minority and accessory just can realize carrying or the measuring ability for precision thin wisp, implement device miniaturization, pipe arrangement is cut down, reduce motor load, splined shaft is concentric with hollow motor shaft position, by the high-precision rotation of stepping motor, can make to be handled upside down object rotates arbitrarily angled in suction process, being slidably matched of splined shaft and hub splines provides rational buffering, guarantee to be drawn when carry an object contacts with splined shaft additional mechanism providing additional operation and by gravity and acceleration, do not destroyed.

Accompanying drawing explanation

Fig. 1 is the cut-away view of embedded splined shaft hollow stepping motor of the present utility model;

Fig. 2 is the structural representation of embedded splined shaft hollow stepping motor of the present utility model.

Embodiment

Below in conjunction with specific embodiment, and with reference to accompanying drawing, the utility model is described further:

Embedded splined shaft hollow stepping motor of the present utility model as shown in drawings, splined shaft 1 is slidably matched through hub splines 3 and with hub splines, at described splined shaft, axially have a through hole, by middle duct, can make malleation or negative pressure air or liquid pass through, at described splined shaft 1 two ends, be provided with jump-ring slot, in the jump-ring slot described in two, be separately installed with, lower circlip 9-1, 9-2, by the jump ring arranging, can make splined shaft 1 axially move and not come off in hub splines 3, the spline ball that is arranged on hub splines 3 inwalls acts on and in the ball grooves arranging on splined shaft 1, makes it can not radial motion, described hub splines 3 is embedded in hollow rotating shaft 2 and by keyway and hollow rotating shaft 2 and closely cooperates, upper jump ring can hold out against and coordinate with the upper end of hub splines, on the splined shaft between lower circlip and the lower end of hub splines, be provided with spring 10, described hollow rotating shaft 2 axially runs through and is arranged in rotor 6 along it, hollow rotating shaft 2 two ends are supported on upper end cover 4 and bottom end cover 8 by two bearings 5 that arrange with one heart respectively, the input of described hollow rotating shaft 2 protrudes from upper end cover 4 and arranges, described hollow rotating shaft 2 outputs are arranged in bottom end cover 8, guarantee that axial rotation is steady.Described upper end cover 4 is fixedly connected with motor housing 7 with bottom end cover 8.

Hollow rotating shaft 2 inputs of the present utility model protrude from upper end cover 4, hollow rotating shaft 2 outputs are built in bottom end cover 8, two ends are all assemblied in the bearing 5 of concentric setting, after power supply, under the effect of rotor 6, hollow rotating shaft 2 can keep synchronous rotatablely moving, hollow rotating shaft 2 inner hollow diameter can be 10mm, can synchronize and rotate when hollow rotating shaft 2 rotates with its close-fitting hub splines 3, splined shaft 1 is in hub splines 3, the jump-ring slot that is arranged on splined shaft 1 two ends makes to axially move in the effective travel of splined shaft 1 in hub splines 3 and does not come off under the effect of jump ring, the spline ball that is arranged on hub splines 3 inwalls acts on and in the ball grooves arranging on splined shaft 1, makes it can not radial motion, because splined shaft 1 is hollow, by pipeline, can make fluid pass through, splined shaft 1 part of exposing at hollow rotating shaft 2 inputs can connect outside gas circuit or optics pipe arrangement and accessory easily, splined shaft 1 part of exposing at hollow rotating shaft 2 outputs can configure various vacuum cups or optical detection accessory as required, on the splined shaft between lower circlip and the lower end of hub splines, be provided with spring 10, between lower circlip and 3 of hub splines, be centered around on splined shaft 1, under the effect of spring 10, splined shaft 1 be not subject to external force or suffered external force deficiency so that can remain static under the condition of spring 10 deformation, when having external impacts or be subject to inertia effects can play good cushioning effect.

Claims

1. embedded splined shaft hollow stepping motor, splined shaft is slidably matched through hub splines and with hub splines, it is characterized in that: at described splined shaft, axially have a through hole, at described splined shaft two ends, be provided with jump-ring slot, in the jump-ring slot described in two, be separately installed with, lower circlip, described hub splines is embedded in hollow rotating shaft and by keyway and hollow rotating shaft and closely cooperates, upper jump ring can hold out against and coordinate with the upper end of hub splines, on the splined shaft between lower circlip and the lower end of hub splines, be provided with spring, described hollow rotating shaft axially runs through and is arranged in rotor along it, two bearings that arrange are with one heart passed through respectively on upper end cover and bottom end cover in hollow rotating shaft two ends, the input of described hollow rotating shaft protrudes from upper end cover setting, described hollow rotating shaft output is arranged in bottom end cover, described upper end cover is fixedly connected with motor housing with bottom end cover.