CN202484025U

CN202484025U - Spherical locating pin

Info

Publication number: CN202484025U
Application number: CN2012200857497U
Authority: CN
Inventors: 袁宏楼; 仲钊全
Original assignee: SHANGHAI HUIDA MANUFACTURING Co Ltd
Current assignee: SHANGHAI HUIDA MANUFACTURING Co Ltd
Priority date: 2012-03-08
Filing date: 2012-03-08
Publication date: 2012-10-10
Anticipated expiration: 2022-03-08

Abstract

The utility model relates to a spherical locating pin which comprises a locating pin body and a bulb locating base connected with the locking pin body, wherein the bulb locating base is provided with a bulb locating hole, a steel ball is embedded in the bulb locating hole, the local part of the steel ball extends out of the opening of the bulb locating hole, and the diameter of the opening of the bulb locating hole is less than that of the steel ball. The locating pin is low in use cost and is reduced in processing difficulty because the spherical surface part of the spherical locating pin is separated from the locating pin and further can be partially replaced when damaged.

Description

A kind of sphere locating stud

Technical field

The utility model relates to a kind of locating stud, relates in particular to a kind of sphere locating stud.

Background technique

In machining process; Sometimes can use the sphere locating stud workpiece is accomplished clamping and positioning; A kind of housing 100 that is called the automobile electric power-assisted steering machine as shown in Figure 1, when machining, client is because of precision and installation requirement; Specify place's location and installation point, be specially the setting circle pit 110 of a diameter 10mm on the part; When using the sphere locating stud that workpiece is carried out clamping and positioning, this sphere locating stud is made into monolithic construction in the existing technology, and needs control profile tolerance and many places critical size; Integrated type sphere locating stud as shown in Figure 2 because the land portions (hemispherical head 210 of protrusion) of this integrated type sphere locating stud 200 is relatively difficult in course of working, is not easy to guarantee required precision.And in a single day the sphere of locating stud in use weares and teares, just need the integral replacing locating stud; And then user cost and difficulty of processing have been increased.

The model utility content

The utility model technical problem to be solved is to provide a kind of sphere locating stud that can effectively reduce difficulty of processing and parts user cost.

Its technical problem to be solved can be implemented through following technological scheme.

A kind of sphere locating stud; Comprise locating stud body and the bulb positioning seat that is connected with said locating stud body; Said bulb positioning seat is provided with a bulb positioning hole; Be embedded with a steel ball in the said bulb positioning hole, the aperture of said bulb positioning hole is stretched out in the part of said steel ball, and the orifice diameter of said bulb positioning hole is less than the sphere diameter of said steel ball.

As the further improvement of present technique scheme, said bulb positioning seat and said detachable connection of locating stud body.

Also as the further improvement of present technique scheme, said bulb positioning seat and said locating stud body connect as one through screw.

As one of preferred embodiment of the utility model; Said screw comprises an attachment screw and a rotation inhibiting screw; The tail end of said attachment screw is placed in the countersunk head mounting hole that said bulb positioning seat offered, and the other end is connected with first inner bolt hole that said locating stud body is offered; The tail end of said rotation inhibiting screw is nested in the said bulb positioning hole, and the other end is connected with second inner bolt hole that said locating stud body is offered.

Wherein, the tail end of said rotation inhibiting screw preferably presses closer the bottom of said steel ball.

Adopt the sphere locating stud of technique scheme; Transform existing sphere locating stud as split type sphere locating stud; Land portions and locating stud through with the sphere locating stud decompose; And then when land portions is damaged, can partly change, not only user cost is lower, has also reduced difficulty of processing simultaneously.

Description of drawings

Below in conjunction with accompanying drawing the embodiment of the utility model being done one specifies.

Fig. 1 is a GAMMA steering box structural representation;

Fig. 2 is the structural representation of existing integrated type sphere locating stud;

Fig. 3 is the structural representation of the utility model;

Fig. 4 is the structural representation of steel ball supporting cover among Fig. 3;

Fig. 5 is the structural representation of supporting member among Fig. 3;

Fig. 6 is the structural representation of supporting base among Fig. 3;

Fig. 7 is the user mode schematic representation of the utility model;

---housing 110---circle pit 200---locating stud 210---hemispherical head 310---steel ball supporting cover 311---countersunk head mounting hole 312---mounting hole 320---supporting base 321,322---tapped hole 330---adjustment pad 411---screw 412---supporting member 500---steel ball 700---clamping arm among the figure: 100,600

Embodiment

To sphere locating stud and application thereof shown in Figure 7, this locating stud mainly is made up of the steel ball supporting cover 310 on supporting base 320 and top thereof like Fig. 3, and supporting base 320 bottoms are provided with adjustment pad 330.Offer tapped

hole

322 and 321 on the supporting base, corresponding with the position of tapped

hole

322 and 321, on steel ball supporting cover 310, offer positioning hole 312 (steel ball mounting hole) and countersunk head mounting hole 311; Steel ball 500 is installed in the positioning hole 312; The aperture of positioning hole 312 is consistent with the sphere diameter of steel ball 500; Escape from the upper opening of positioning hole 312 in order to prevent steel ball 500; The inside punching press flange a little in the aperture, top of positioning hole 312 is formed an obstruct, still can stretch out positioning hole 312 so that orifice diameter, can guarantee the part of steel ball 500 simultaneously less than the steel ball sphere diameter; With the land portions of serving as locating stud (aperture that is whole positioning hole 312 is suitable for inserting of steel ball 500, will guarantee simultaneously that steel ball 500 can not shake off) from the position, aperture of positioning hole 312; The bottom of steel ball 500 presses closer the top of supporting member 412 (specifically can be the screw head of a screw), and the lower thread cooperation of supporting member 412 is installed in the tapped hole 322; Sunk screw 411 links together the steel ball supporting cover 310 on top and the supporting base 320 of bottom through countersunk head mounting hole 311 and tapped hole 321.

In fact; Supporting member 412 plays stable connection up and down; And prevent that steel ball supporting cover 310 and supporting base 320 from acting in relative rotation; Come to be connected jointly steel ball supporting cover 310 and supporting base 320 through two attachment screws (screw 411 and supporting member 412), the deficiency that possibly rotate each other when both having avoided a screw to connect, supporting member is also being brought into play steel ball 500 is being pressed closer up simultaneously; Keep hemisphere 210 metastable effects.

For guaranteeing clamping precision, this structure can be passed through match grinding steel ball supporting cover 310 upper-end surface positioning holes 312 orifice diameter, and control steel ball 500 overhangs are to guarantee size requirement; Through match grinding steel ball supporting cover 310 lower end surfaces, guarantee the tight contact of steel ball 500, supporting member 412, supporting base 320; Guarantee total high request through match grinding adjustment pad 330.Through controlling fit dimension and the crucial form and position tolerance of each part (size on the part all can realize through general boring machine and grinding machine processing) between each part, the profile tolerance requirement after can guaranteeing to assemble.

As shown in Figure 7, housing 600 is clamped through clamping arm 700 and steel ball 500.

This sphere locating stud is through splitting the bulb and the locating stud of integrated type locating stud; Bulb positioning seat and locating stud body are arranged to detachable linkage structure, through independent processing and splitting part, fit together again like this; Thereby the simplification difficulty of processing, and help guaranteeing clamping precision.And sphere locating stud wearing and tearing back is changed conveniently, manufacturing is simple, is convenient to the field maintenance in factory.

Having solved existing sphere locating stud clamps; Owing to use sphere and the fixed monolithic construction of locating stud, make the hemispherical portion of its sphere locating stud be difficult to processing, the precision after the very difficult assurance processing; And the sphere of locating stud is in case wearing and tearing need the integral replacing locating stud.After using this split type sphere locating pin structure, simplified difficulty of processing, and helped guaranteeing clamping precision.Actual adding, can be installed on the supporting member of locating stud by the high standard steel ball of service precision man-hour.

Claims

1. sphere locating stud; Comprise locating stud body and the bulb positioning seat that is connected with said locating stud body; Said bulb positioning seat is provided with a bulb positioning hole; Be embedded with a steel ball in the said bulb positioning hole, the aperture of said bulb positioning hole is stretched out in the part of said steel ball, and the orifice diameter of said bulb positioning hole is less than the sphere diameter of said steel ball.

2. sphere locating stud according to claim 1 is characterized in that, said bulb positioning seat and said detachable connection of locating stud body.

3. sphere locating stud according to claim 2 is characterized in that, said bulb positioning seat and said locating stud body connect as one through screw.

4. sphere locating stud according to claim 3; It is characterized in that; Said screw comprises an attachment screw and a rotation inhibiting screw; The tail end of said attachment screw is placed in the countersunk head mounting hole that said bulb positioning seat offered, and the other end is connected with first inner bolt hole that said locating stud body is offered; The tail end of said rotation inhibiting screw is nested in the said bulb positioning hole, and the other end is connected with second inner bolt hole that said locating stud body is offered.

5. sphere locating stud according to claim 4 is characterized in that, the tail end of said rotation inhibiting screw presses closer the bottom of said steel ball.