CN201196221Y

CN201196221Y - Ball stud coupling

Info

Publication number: CN201196221Y
Application number: CNU2008200482875U
Authority: CN
Inventors: 柯儒群; 张河关
Original assignee: YUDONG (ZHONGSHAN) MACHINERY ENGINEERING Co Ltd
Current assignee: YUDONG (ZHONGSHAN) MACHINERY ENGINEERING Co Ltd
Priority date: 2008-05-20
Filing date: 2008-05-20
Publication date: 2009-02-18
Anticipated expiration: 2018-05-20

Abstract

The utility model relates to a ball-end pin coupling, which comprises a left half coupling (1) and a right half coupling (2), wherein the left half coupling (1) and the right half coupling (2) are connected by a ball-end pin (3) to transfer power, a tail portion (33) of the ball-end pin (3) is connected with the left half coupling (1), a chute (21) is arranged on the right half coupling (2), and a ball end (31) of the ball-end pin (3) is nested in the chute (21). The ball-end pin coupling leads two shafts which are connected to have least constraint and obtain maximum compensation on the axial direction, the radial direction, the angle direction and comprehensive displacement, simultaneously, has small additional load, simple structure, low cost and convenient assemble and disassemble.

Description

A kind of ball stud coupling

Technical field:

The utility model relates to a kind of ball stud coupling.

Background technique:

Coupling is one of crucial component in mechanical device and the machinery, and its major function is to connect diaxon, realizes the transmission of motion and power, has in actual engineering very widely and uses.The coupling that is applied in actual engineering as the standard piece in the Machine Design has tens of kinds more than, in order to guarantee the proper functioning of coupling, the axis of the diaxon that is connected by coupling should strict coaxial centering, but because the influence of factors such as processing and assembling sum of errors stress deformation, two axis that connected by coupling may produce various offset form such as axial displacement, radial displacement, angular displacement and comprehensive displacement.Fast coupling compensates various displacements by the relative movement between the element in the work.Hooks coupling universal coupling (Cardon universal joint) is respectively with hinge-coupled by the yoke on the master and slave moving axis and middle cross axle, when diaxon has angular displacement, yoke is around fixed axis revolution separately, and cross axle is then done spatial motion, thereby compensates the angular displacement of two between centers.My company prolongs in lift with external import Hooks coupling universal coupling with machine always, the axle that connects reducer output shaft and encoder, because the comprehensive displacement that processing and alignment error cause, additional load is bigger, on the one hand coupling is damaged at the trunnion journal place, reduced the working life of encoder greatly, and change inconvenience and cost higher.Used the elastic coupling flexible coupling of wire type afterwards instead, but the hardenability the during heat treatment of wire quality and the torsional stiffness of steel wire, the damping value when being subjected to varying load effect is little, and interior friction and wear is more serious.Therefore, develop a kind of constraint that realizes that connected diaxon is minimum, axially, radially, angle and comprehensive displacement obtain maximum compensation, the coupling of additional load minimum is a mechanical engineering field and domestic and international professional person's of the same trade scientific research project always simultaneously.

Summary of the invention:

The purpose of this utility model is to provide a kind of ball stud coupling, make connected diaxon that minimum constraint not only be arranged, and axially, radially, angle and comprehensive displacement obtain maximum compensation, additional load is little, simple in structure simultaneously, cost is low, mounting or dismounting are convenient.

The utility model is achieved through the following technical solutions:

A kind of ball stud coupling, comprise left half-coupling and right half-coupling, left half-coupling is to be connected transferring power by ball stud with right half-coupling, and wherein the afterbody of ball stud is connected with left half-coupling, on the right half-coupling chute is set, the bulb of ball stud is nested in the chute the inside.

The utility model compared with prior art has following advantage: 1) will have in the sphere of 5 degrees of freedom and the motion and transmission of power that planar kinematic pair successfully is applied to coupling.As long as determine correctly that diameter between ball stud spherical diameter, sphere and its neck bar is poor, chute width, chute length, can satisfy the needs of different operating modes, can have the ability that compensates various displacements, adaptability is strong; 2) additional load has obtained reducing to greatest extent simultaneously.3) simple in structure, unique properties, cheap, mounting or dismounting change convenient and swift, using scope is wide, price has only 1/2 of imported product; 4) be suitable for the coaxial centering of coupled diaxon is required low or reach the too high occasion of the cost of spending entirely on the center to use, connecting between observing and controlling element such as encoder and tested moving element has huge development potentiality especially.

Above-mentioned described bulb appearance forms sphere, and the sidewall of chute is the plane, cooperates the kinematic pair that forms a plurality of degrees of freedom with sidewall by sphere.

Form the bar neck between the afterbody of above-mentioned described ball stud and the bulb, the diameter of bulb is greater than the diameter of bar neck.

Above-mentioned described chute can be the radially vertical bar shaped chute that passes right half-coupling center, also can be the vertical bar shaped chute that departs from right half-coupling center.

The two side of described chute is vertical with left half-coupling.

Above-mentioned described bulb and chute are handled through hard chromium plating by high-abrasive material manufacturing or surface.

The afterbody of above-mentioned described ball stud is threaded with tapped hole on the left half-coupling, between ball stud and left half-coupling end face spring washer is installed.

By jump ring bolt is installed on the center hole of above-mentioned described left half-coupling, left half-coupling and driving shaft is coupled together by bolt and lock screw.

Above-mentioned described right half-coupling center has non-circular slot, and the sectional shape of driven shaft is corresponding with non-circular slot, and driven shaft is nested in the non-circular slot the inside and locks with lock screw.

Description of drawings:

Below in conjunction with accompanying drawing the utility model is done detailed explanation.

Fig. 1 is a mechanical schematic diagram of the present utility model.

Fig. 2 is a general assembly drawing of the present utility model.

Fig. 3 is the plan view of the utility model left side half-coupling.

Fig. 4 is the structural representation of the utility model ball stud.

Fig. 5 is the plan view of the right half-coupling of the utility model.

Fig. 6 is the right elevation of Fig. 5.

Embodiment:

As shown in Figure 1, the utility model comprises left half-coupling 1 and right half-coupling 2, left side half-coupling 1 is to be connected transferring power by ball stud 3 with right half-coupling 2, the afterbody 33 of ball stud 3 is connected with left half-coupling 1, on the right half-coupling 2 chute 21 is set, the bulb 31 of ball stud 3 is nested in chute 21 the insides.Described bulb 31 appearances form sphere 311, and the sidewall 211 of chute 21 is planes, cooperates the kinematic pair that forms a plurality of degrees of freedom by sphere 311 with sidewall 211.

As Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, form bar neck 32 between the afterbody 33 of ball stud 3 and the bulb 31, the diameter of bulb 31 is greater than the diameter of bar neck 32.Described chute 21 can be the radially vertical bar shaped chute that passes right half-coupling 2 centers, also can be the vertical bar shaped chute that departs from right half-coupling 2 centers.The two side 211 of described chute 21 is vertical with left half-coupling 1.Bulb 31 and chute 21 are by high-abrasive material manufacturing or surface process cure process.The afterbody 33 of ball stud 3 is threaded with tapped hole 11 on the left half-coupling 1, between ball stud 3 and left half-coupling 1 end face, spring washer 4 is installed, by jump ring 5 bolt 6 is installed on the center hole 12 of left side half-coupling 1, bolt 6 can not move axially, bolt 6 is threaded with driving shaft 13, the hole 15 that lock screw 7 passes on the left half-coupling 1 is tightened on the driving shaft 13, and driving shaft 13 can be finished by welding manner with being connected also of left half-coupling 1 certainly.Described right half-coupling 2 centers have non-circular slot 22, and the sectional shape of driven shaft 8 is corresponding with non-circular slot 22, and driven shaft 8 is nested in non-circular slot 22 the insides and locks with lock screw 9.Driven shaft 8 drives moving encoder 14.

As shown in Figure 1, left half-coupling 1 of the present utility model can move around in Z-direction, X-axis direction with ball stud 3 and realize two degrees of freedom, can swing in the several angle scope around X-axis in addition, pendulum angle depends on that the diameter of the diameter of the position of bulb 31 and bulb 31 and bar neck 32 is poor; Can swing around Y-axis, can rotation around the Z axle.This kinematic pair with five degrees of freedom is a kind of whole new set of applications on coupling, can realize the constraint that connected diaxon is minimum, axially, radially, angle and comprehensive displacement obtain maximum compensation, additional load minimum simultaneously.Be made up of left half-coupling 1, right half-coupling 2 and ball stud 3 on the bulb coupler structure, ball stud 3 is contained on the left half-coupling 1, offers corresponding radial groove 21 on the right half-coupling 2, constitutes the kinematic pair on open type sphere and plane.Have the big and big characteristics of Hooks coupling universal coupling angular displacement of oldham coupling radial displacement concurrently.

As Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, the utility model comprises left half-coupling 1, right half-coupling 2 and ball stud 3.The size that the diameter of ball stud 3 is chosen according to transmission power calculates.And the difference of bulb 31 diameters of ball stud and bar neck 32 diameters depends on the size of coupled diaxon permission angular displacement.Chute 21 width of right half-coupling 2 and length dimension depend on coupled diaxon allowable axially, radially with the size of comprehensive displacement.Bulb 31 all adopts high-abrasive material or surface hardening to handle with chute 21.Ball stud 3 by afterbody 33 threaded end and add spring washer 4 and be fixed on the left half-coupling 1, can prevent that ball stud 3 is subjected to alternate load when work effect from producing loosening.Left side half-coupling 1 usefulness special bolt 6 is implemented in connecting of driving shaft 13 with lock screw 7, and driven shaft 8 is realized connecting with right half-coupling 2 by non-circular slot 22 and Cock screw 9.Two half-coupling spacings normal root really wherein determine in the space of withdrawing from of any one component according to dismounting.Assembling ball stud 3 is not subjected to the influence of left and right sides coupling sequencing, can ball stud 3 be installed on the corresponding screw 11 of left half-coupling 1 from the chute 21 of right half-coupling 2.When dismantling simultaneously, only use from the chute 21 of right half-coupling 2 and withdraw from, can finish dismounting.As long as left side half-coupling 1 is with special bolt 6 center hole 12 of packing into, and limits with shaft block ring 5 and to move axially, and is installed on the axle, can prevent that left half-coupling 1 is produced by the effect of alternate load when work and becomes flexible.The dismounting of left side half-coupling 1, special bolt 6 and left half-coupling 1 all have enough spaces to withdraw from from axle, need not move any component.Cock screw 9 on the right half-coupling 2 and chute 21 90 degree that spatially interlace guarantee that dismounting Cock screw 9 has enough spaces, and the dismounting of right half-coupling 2 and install and do not need to move any component yet is not subjected to the influence of left half-coupling 1 erection sequence yet.Therefore dismounting is very convenient, safeguards that simple expense is low.

Claims

1. ball stud coupling, comprise left half-coupling (1) and right half-coupling (2), it is characterized in that: left half-coupling (1) is to be connected transferring power by ball stud (3) with right half-coupling (2), wherein the afterbody (33) of ball stud (3) is connected with left half-coupling (1), on the right half-coupling (2) chute (21) is set, the bulb (31) of ball stud (3) is nested in chute (21) the inside.

2. a kind of ball stud coupling according to claim 1, it is characterized in that: described bulb (31) appearance forms sphere (311), the sidewall (211) of chute (21) is the plane, cooperates the kinematic pair that forms a plurality of degrees of freedom by sphere (311) with sidewall (211).

3. a kind of ball stud coupling according to claim 2 is characterized in that: form bar neck (32) between the afterbody (33) of ball stud (3) and the bulb (31), the diameter of bulb (31) is greater than the diameter of bar neck (32).

4. according to claim 1,2 or 3 described a kind of ball stud coupling, it is characterized in that: described chute (21) can be the radially vertical bar shaped chute that passes right half-coupling (2) center, also can be the vertical bar shaped chute that departs from right half-coupling (2) center.

5. according to claim 2 or 3 described a kind of ball stud coupling, it is characterized in that: the two side (211) of described chute (21) is vertical with left half-coupling (1).

6. a kind of ball stud coupling according to claim 4 is characterized in that: bulb (31) and chute (21) are by high-abrasive material manufacturing or surface process cure process.

7. a kind of ball stud coupling according to claim 4, it is characterized in that: the afterbody (33) of ball stud (3) is threaded with tapped hole (11) on the left half-coupling (1), between ball stud (3) and left half-coupling (1) end face spring washer (4) is installed.

8. a kind of ball stud coupling according to claim 4, it is characterized in that: bolt (6) passes the center hole (12) of left half-coupling (1) and by jump ring (5) chucking, by bolt (6) and lock screw (7) left half-coupling (1) and driving shaft (13) is coupled together.

9. a kind of ball stud coupling according to claim 4, it is characterized in that: described right half-coupling (2) center has non-circular slot (22), the sectional shape of driven shaft (8) is corresponding with non-circular slot (22), and driven shaft (8) is nested in non-circular slot (22) the inside and locks with lock screw (9).