CN106891040A

CN106891040A - A kind of embedded drill bushing of leading type

Info

Publication number: CN106891040A
Application number: CN201710285547.4A
Authority: CN
Inventors: 宁俊义; 王志宏
Original assignee: Shenyang Aircraft Industry Group Co Ltd
Current assignee: Shenyang Aircraft Industry Group Co Ltd
Priority date: 2017-04-27
Filing date: 2017-04-27
Publication date: 2017-06-27

Abstract

The invention belongs to field of mechanical technique, there is provided a kind of embedded drill bushing of leading type, including cylinder-shaped body, set emit, groove, drill bushing boss.There is the groove that a section is triangle on the face of cylinder that the embedded drill bushing of leading type is contacted with model, groove lateral face is 75 ° with the key groove of vertical plane composition, and the embedded drill bushing of leading type is interference fit with model room.There is a through hole at the center of the embedded drill bushing of leading type, and through hole is 0 °~75 ° with the angle α of vertical plane institute journey, and there is the chamfered edge of 03.X.03 through hole both sides.On the contact surface of the embedded drill bushing of leading type and model, there are a drill bushing boss with plane where through hole center line as the plane of symmetry, the direction of keyhole.Simple structure of the present invention, using dissymmetrical structure, bit bore is guided with through hole direction, makes drill bit that the fabrication hole of part is drilled according to set direction；Accurate positioning, improves assembly precision.

Description

A kind of embedded drill bushing of leading type

Technical field

The invention belongs to field of mechanical technique, it is related to a kind of drill bushing, more particularly to a kind of improvement of model drill bushing.

Background technology

With the development of digital production technology, in the manufacturing process of aircraft, the effect of model is increasingly weakened, existing rank Section is mainly used in drilling the guide hole or centre bore of the pilot hole and part itself used by assembling.When above-mentioned hole is drilled, first by sample Plate and part pairing, are then drilled by the hole position on model drill bushing.

But there are many curved surface parts (such as Fig. 1 (a), Fig. 1 (b)) during aircraft manufacturing, its hole position is according to curved surface The line of vector that direction vector is given, because model has certain rigidity, such as provides model in its curved surface, and model can be along curved surface side To slip or rolling, location difficulty, therefore hole position can only be provided in the corresponding plane of curved surface.But the line of vector with make even face not Vertically, because the direction in traditional drill bushing hole is vertical with model plane, so the deviation of boring direction can be caused.Once make Drilled with such model, part can be caused to assemble or rigging error is caused, so as to influence product quality, reduce the life of aircraft Produce efficiency.

The content of the invention

In order to solve the deficiencies in the prior art, the present invention provides a kind of embedded drill bushing of leading type, by drill bushing knot Structure is improved, and can effectively solve the drilling problems of curved surface part, reduces the positioning difficulty of model and part, and brill is greatly improved Hole precision.

In order to achieve the above object, the technical scheme is that：

A kind of embedded drill bushing of leading type, including the thick set of cylinder-shaped body, 2mm emits 4-1, groove 4-2, drill bushing boss 4- 3。

There are a groove 4-2, the section of groove 4-2 on the face of cylinder that the embedded drill bushing of described leading type is contacted with model It is triangle, groove lateral face is 75 ° with the key groove β of vertical plane composition, and the embedded drill bushing of leading type was with model room It is full of cooperation.

There is a through hole at the center of the described embedded drill bushing of cylindrical leading type, and through-hole diameter D is Through hole is 0 °~75 ° with the angle α of vertical plane institute journey, and bit bore is guided with through hole direction, makes drill bit according to set direction Drill part process hole；There is the chamfered edge of 03.X.03 through hole both sides.The contact surface of the embedded drill bushing of described leading type and model On, there is a drill bushing boss 4-3 with plane where through hole center line as the plane of symmetry, for keyhole direction.Described brill The thickness H that model is stretched into during set processing is determined that thickness H is two kinds of specifications of 1mm or 1.5mm by model thickness；Whole drill bushing Thickness is 3mm~3.5mm.

Beneficial effects of the present invention are：Simple structure of the present invention, using dissymmetrical structure, is bored with through hole direction guiding drill bit Hole, makes drill bit that the fabrication hole of part is drilled according to set direction.Simultaneously because have the presence of boss with the contact surface of model, can With the direction of effective keyhole.Can reach in use by positioning in the plane, drill through the work with curved vertical The effect in skill hole, and accurate positioning, improve assembly precision.

Brief description of the drawings

Fig. 1 (a) is the front view of traditional model drill bushing；

Fig. 1 (b) is the front view of traditional model drill bushing；

Fig. 2 is a kind of sectional view of novel embedded drill bushing of the present invention；

Fig. 3 is a kind of three-dimensional structure diagram of novel embedded drill bushing of the present invention；

Fig. 4 is the mosaic process figure of drill bushing of the present invention；

Fig. 5 is the boring procedure figure being enclosed within using Novel drill on model；

In figure：1 model；2 one sides are the part of curved surface；3 traditional non-angular drill bushings；The embedded drill bushing of 4 leading types；4-1 Set emits；4-2 grooves；4-3 drill bushing boss；The theoretical line of vector of 5 drilling parts；The line of vector in 6 actual process holes.

Specific embodiment

Below in conjunction with specific embodiment, the invention will be further described.

Fig. 1 (a), Fig. 1 (b) are front view, the front view of traditional model drill bushing, and 1 tradition is produced on curved surface in figure Model, 2 for one side for curved surface part, 3 be traditional non-angular drill bushing, 5 for drilling part theoretical line of vector, 6 be actual The line of vector of fabrication hole.

A kind of embedded drill bushing of leading type, the drill bushing main body is cylinder, and the set for having a thickness to be 2mm emits 4-1, its There is a groove 4-2 on the face of cylinder that the model 1 produced on curved surface with tradition is contacted, the section of groove 4-2 is triangle, recessed Groove 4-2 laterals face is 75 ° with the key groove of vertical plane composition, is interference fit between the drill bushing and model 2.

Under MBD technical conditions, produce plane with model 1 with the line of vector in hole and intersect, draw its position intersected with model 1 Put, and groove 4-2 (as shown in Figure 4) corresponding with drill bushing boss 4-3 is cut out in line of vector projecting direction, during processing model 1, During the embedded drill bushing of leading type tapped into model 1 using hammer.The embedded drill bushing of leading type uses interference fit with model 1, Therefore it will not fall off.The thickness of drill bushing is 3mm~3.5mm, and the stroke of 3mm ensures the drilling essence of drill bit enough in use There is 0 °~75 ° of angle in degree, centre bore and the drilling part face of drilling, it is ensured that drill bit completes to drill along fixed-direction.

Claims

1. the embedded drill bushing of a kind of leading type, it is characterised in that the embedded drill bushing of described leading type include cylinder-shaped body, 2mm thick set emits (4-1), groove (4-2) and drill bushing boss (4-3)；

There is the groove (4-2) that a section is triangle on the face of cylinder that the embedded drill bushing of described leading type is contacted with model, Groove (4-2) lateral face is 75 ° with the key groove β of vertical plane composition, and the embedded drill bushing of leading type is with model room for interference is matched somebody with somebody Close；

There is a through hole at the embedded drill bushing center of described cylindrical leading type, and through-hole diameter D isThrough hole with hang down The angle α of institute's journey is faced directly for 0 °~75 °, bit bore is guided with through hole direction, drill bit is drilled part according to set direction Fabrication hole；There is the chamfered edge of 03.X.03 through hole both sides；

On the contact surface of the embedded drill bushing of described leading type and model, there is one with plane where through hole center line as the plane of symmetry Drill bushing boss (4-3), for keyhole direction；Described drill bushing stretches into the thickness H of model by model thickness when processing It is determined that, thickness H is two kinds of specifications of 1mm or 1.5mm；The thickness of whole drill bushing is 3mm~3.5mm.