CN201593594U

CN201593594U - Ball screw

Info

Publication number: CN201593594U
Application number: CN200920262174XU
Authority: CN
Inventors: 申振飞
Original assignee: SHENZHEN JINGYI INTELLIGENT MACHINERY CO Ltd
Current assignee: SHENZHEN JINGYI INTELLIGENT MACHINERY CO Ltd
Priority date: 2009-12-25
Filing date: 2009-12-25
Publication date: 2010-09-29
Anticipated expiration: 2019-12-25

Abstract

The utility model provides a ball screw, which comprises a screw shaft, a nut, a bearing block and a supporting base. Two ends of the screw shaft are provided with a first socket post and a second socket post, the first socket post and the second socket post are both provided with external threads, and the outer surface of the screw shaft is concavely provided with a rolling groove. The nut comprises a socket portion and a retaining portion, the socket portion is provided with a sliding cavity sleeved on the screw shaft, the inner wall of the sliding cavity is concavely provided with a recess for holding balls, and a plurality of balls are disposed in the recess and contact with the rolling groove. The bearing block comprises a bearing and a bearing bush, a bearing cavity is arranged in the bearing bush, and the bearing is sleeved on the first socket post of the screw shaft. The ball screw is simple in manufacturing and low in manufacturing cost, and can be engaged with a motor well.

Description

A kind of ball screw

Technical field

The utility model relates to a kind of leading screw, more specifically is meant a kind of ball screw.

Background technique

As everyone knows, ball screw is that rotation motion is converted into straight line motion, or straight line motion is converted into the desirable product of rotation motion, and ball screw is made up of screw rod, nut and ball.Its function is to change into straight line motion with rotatablely moving, and this is the further extension and the development of ball screw, and the significance of this development becomes bearing into sliding action from scroll actions exactly.Owing to have very little surface friction drag, ball screw is widely used in various industry equipments and precision type instrument.

Before ball screw occurs, used leading screw is simply to be made up of thread spindle and nut when being used for shuttle table or other objects, nut sleeve is located on the thread spindle, and therefore this simple leading screw is replaced by ball screw because friction factor is too big, damage easily.As the ball screw that is provided with rotatable ball between thread spindle and the nut assembly, carry out the leading screw of sliding contact compares with the ball by intermediary not, friction factor in the time of can reducing thread spindle and be rotated with respect to nut assembly, therefore, be applied in the positioning means and feed mechanism of lathe.

But common ball screw can be provided with a retainer in its screw mostly at present, ball is installed in the retainer, obviously owing to the restriction of its structure, there is the problem of making difficulty in this common leading screw, and, in manufacture process retainer being installed in the screw also is the thing of part difficulty, need to increase other operation, in addition, common leading screw with have difficulties on motor cooperates, therefore, be necessary the common ball screw of this class is made necessary improvement.

Summary of the invention

The utility model main purpose is to provide a kind of slip steady, makes simple ball screw.

Another purpose of the present utility model is to provide a kind of and the ball screw motor no-float.

The technical solution adopted in the utility model is: a kind of ball screw, comprise lead screw shaft, screw, bearing support and supporting base, wherein, the two ends of this lead screw shaft are provided with the first socket post and the second socket post, wherein, the first socket post and the second socket post all are provided with outside thread, outer surface in this lead screw shaft is concaved with rolling groove, this screw comprises belled part and blocking part, wherein, this belled part is provided with sliding cavity, and this sliding cavity is socketed on this lead screw shaft, the inwall of this sliding cavity is concaved with the recess of putting ball, and in this recess, be placed with a plurality of balls, and these a plurality of balls are again contacted with this rolling groove, this blocking part is provided with a plurality of interior hexagonal column caps, this bearing support comprises bearing and bearing housing, wherein, be provided with bearing bore in this bearing housing, this bearing housing is connected on the first socket post of this lead screw shaft, and in locking nut of outside thread socket of this first socket post, this supporting base is socketed on this second socket post.

The beneficial effects of the utility model are: the utility model structurally comprises lead screw shaft, screw, bearing support and supporting base, wherein, the two ends of this lead screw shaft are provided with the first socket post and the second socket post, wherein, the first socket post and the second socket post all are provided with outside thread, outer surface in this lead screw shaft is concaved with rolling groove, this screw comprises belled part and blocking part, wherein, this belled part is provided with sliding cavity, this sliding cavity is socketed on this lead screw shaft, the inwall of this sliding cavity is concaved with the recess of putting ball, and in this recess, be placed with a plurality of balls, these a plurality of balls are again contacted with this rolling groove, this blocking part is provided with a plurality of interior hexagonal column caps, this bearing support comprises bearing and bearing housing, wherein, be provided with bearing bore in this bearing housing, this bearing housing is connected on the first socket post of this lead screw shaft, and in locking nut of outside thread socket of this first socket post, this supporting base is socketed on this second socket post, can realize making simple by its special structure design the utility model, effect cheap for manufacturing cost, the utility model can also be realized the effect with the motor no-float in addition.

Description of drawings

Fig. 1 is an overall schematic of the present utility model.

Fig. 2 is the schematic representation of lead screw shaft of the present utility model.

Fig. 3 is the schematic representation of screw of the present utility model.

Fig. 4 is the part section structural representation that ball of the present utility model contacts with rolling groove.

Fig. 5 is an embodiment's of the present utility model decomposing schematic representation.

Embodiment

As 1 to Figure 5 shows that a kind of preferable specific embodiment of the present utility model, a kind of ball screw, as 1 to shown in Figure 4, comprise lead screw shaft 10, screw 20, bearing support 30 and supporting base 40, wherein, the two ends of this lead screw shaft 10 are provided with the first socket post 11 and the second socket post 12, wherein, the first socket post 11 and the second socket post 12 all are provided with outside thread 121, outer surface in this lead screw shaft 10 is concaved with rolling groove 13, this screw 20 comprises belled part 21 and blocking part 22, wherein, this belled part 21 is provided with sliding cavity 211, this sliding cavity 211 is socketed on this lead screw shaft 10, the inwall of this sliding cavity 211 is concaved with the recess 212 of putting ball, and in this recess 212, be placed with a plurality of balls 50, these a plurality of balls 50 are again contacted with this rolling groove 13, this blocking part 22 is provided with a plurality of interior hexagonal column caps 221, this bearing support 30 comprises bearing 31 and bearing housing 32, wherein, be provided with bearing bore 321 in this bearing housing 32, this bearing 31 is socketed on the first socket post 11 of this lead screw shaft 10, and in locking nut 60 of outside thread 121 sockets of this first socket post 11, thereby prevent that this bearing support 30 from coming off from this first socket post 11.

This supporting base 40 is socketed in this second socket post 12

Further, as shown in Figure 5, this supporting base 40 is arranged in the

motor cabinet

70, and 70 pairs of this motor cabinets should be provided with motor cavity 71 by supporting base 40.

Claims

1. ball screw, it is characterized in that: comprise lead screw shaft, screw, bearing support and supporting base, wherein, the two ends of this lead screw shaft are provided with the first socket post and the second socket post, wherein, the first socket post and the second socket post all are provided with outside thread, outer surface in this lead screw shaft is concaved with rolling groove, this screw comprises belled part and blocking part, wherein, this belled part is provided with sliding cavity, and this sliding cavity is socketed on this lead screw shaft, the inwall of this sliding cavity is concaved with the recess of putting ball, and in this recess, be placed with a plurality of balls, and these a plurality of balls are again contacted with this rolling groove, this blocking part is provided with a plurality of interior hexagonal column caps, this bearing support comprises bearing and bearing housing, wherein, be provided with bearing bore in this bearing housing, this bearing housing is connected on the first socket post of this lead screw shaft, and in locking nut of outside thread socket of this first socket post, this supporting base is socketed on this second socket post.

2. a kind of ball screw as claimed in claim 1 is characterized in that, this supporting base is arranged in the motor cabinet, and this motor cabinet is to being provided with motor cavity by supporting base.