CN220216835U

CN220216835U - Cabin internal inclined hole jig frock

Info

Publication number: CN220216835U
Application number: CN202321177113.XU
Authority: CN
Inventors: 毛圣男; 代军; 胡昌前; 陆创新; 唐慧; 伍跃远
Original assignee: Guizhou Aerospace Fenghua Precision Equipment Co Ltd
Current assignee: Guizhou Aerospace Fenghua Precision Equipment Co Ltd
Priority date: 2023-05-16
Filing date: 2023-05-16
Publication date: 2023-12-22
Anticipated expiration: 2033-05-16

Abstract

The utility model provides a cabin inner inclined hole drilling jig tool which comprises a reference positioning block, a bottom plate, a positioning pin and a limiting plate; the base plate is fixed on the reference positioning block, the positioning pin is fixed on the base plate, the reference positioning block, the base plate and the positioning pin are concentric, the limiting plate is fixed on the side face of the base plate at a certain angle, the center of the positioning pin is provided with a threaded hole, the threaded hole penetrates through the reference positioning block and the base plate at the same time, the base plate is uniformly provided with a plurality of die holes, and the die holes penetrate through the reference positioning block at the same time. According to the utility model, by combining the existing structural characteristics of the cabin to be processed, the inclination angle of the steel wire screw sleeve hole is well positioned through the bottom plate and the limiting plate, the locating pin prevents the tool from sliding on the cabin, and the coordinate reference alignment of the milling machine is facilitated through the bottom plate, so that the processing efficiency is improved, and the processing precision is greatly improved.

Description

Cabin internal inclined hole jig frock

Technical Field

The utility model relates to a jig tool for inclined holes in a cabin.

Background

A steel wire screw sleeve is required to be processed on the end face of a cabin body of a certain model to strengthen the connection strength, and as shown in fig. 3, an inclined plane transition of 55 degrees is formed between a small end frame of the cabin body and a skin, a plane phi 50 at 12 positions is countersunk on the inclined plane, and a steel wire screw sleeve hole with the depth of 4-ST4 and 8 is required to be processed on each plane. Because the diameter of the inner circle of the small end of the cabin body is phi 324, the main shaft head of the five-axis machine tool does not extend into the inner cavity for processing, the inner cavity also does not have a positioning hole suitable for positioning, the end face is processed in place, and the drilling jig is difficult to clamp under the condition of not affecting the scratch and the bruise of the end face and can only rely on manual operation of a bench worker. In order to accelerate the machining efficiency, as disclosed in the publication No. CN202910592U, a technological device for inclined hole drilling jig is disclosed, a bracket of a tool main body is provided with a through hole at a certain angle, the inclined hole of a workpiece is machined through guiding of the through hole, and compared with manual machining of a bench worker, the positioning speed is accelerated through the tool, the machining efficiency is accelerated, but the tool is only suitable for small-sized workpieces, and the large-sized workpieces cannot be positioned.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a jig tool for drilling inclined holes in a cabin.

The utility model is realized by the following technical scheme.

The utility model provides a cabin internal inclined hole drilling jig tool which comprises a reference positioning block, a bottom plate, a positioning pin and a limiting plate; the base plate is fixed on the reference positioning block, the positioning pin is fixed on the base plate, the reference positioning block, the base plate and the positioning pin are concentric, the limiting plate is fixed on the side face of the base plate at a certain angle, the center of the positioning pin is provided with a threaded hole, the threaded hole penetrates through the reference positioning block and the base plate at the same time, the base plate is uniformly provided with a plurality of die holes, and the die holes penetrate through the reference positioning block at the same time.

The included angle between the limiting plate and the bottom plate is the angle between the inner circular surface of the end frame of the cabin body and the excessive inclined surface.

And an avoiding groove is formed in the included angle between the limiting plate and the bottom plate.

The number and the positions of the die holes correspond to those of the steel wire thread insert holes of the cabin body.

The top of the locating pin is processed into an inclined plane with the same size as the excessive inclined plane of the cabin body, and the inclined direction faces the limiting plate.

The length of the limiting plate is smaller than the width of the inner circular surface of the cabin end frame.

The reference positioning block is square.

The end face of the bottom plate is the same as the countersink groove of the cabin body in size and shape.

The utility model has the beneficial effects that: the existing structural characteristics of the cabin to be machined are combined, the inclined angle of the steel wire screw sleeve hole is well positioned through the bottom plate and the limiting plate, the locating pin prevents the tool from sliding on the cabin, and the bottom plate is convenient for coordinate reference alignment of the milling machine, so that the machining efficiency is improved, and the machining precision is greatly improved.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic view of the bottom structure of the present utility model;

FIG. 3 is a schematic view of the structure of a cavity to be processed;

FIG. 4 is a schematic view of the assembled structure of the present utility model;

in the figure: the device comprises a 1-reference positioning block, a 2-bottom plate, a 3-positioning pin, a 4-limiting plate, a 5-avoidance groove, a 6-die hole, a 7-threaded hole, an 8-cavity end face, a 9-transition inclined plane, a 10-backing plate, a 11-equipment hole, a 12-countersink groove, a 13-steel wire screw sleeve hole and a 14-end frame inner round surface.

Detailed Description

The technical solution of the present utility model is further described below, but the scope of the claimed utility model is not limited to the above.

The jig tool for the inclined holes in the cabin comprises a reference positioning block 1, a bottom plate 2, a positioning pin 3 and a limiting plate 4; the base plate 2 is fixed on the base positioning block 1, the positioning pin 3 is fixed on the base plate 2, the base positioning block 1, the base plate 2 and the positioning pin 3 are concentric, the limiting plate 4 is fixed on the side surface of the base plate 2 at a certain angle, the center of the positioning pin 3 is provided with a threaded hole 7, the threaded hole 7 penetrates through the base positioning block 1 and the base plate 2 at the same time, the base plate 2 is uniformly provided with a plurality of die holes 6, and the die holes 6 penetrate through the base positioning block 1 at the same time. As shown in fig. 4, the die hole is formed in the base plate 2 of the present application to position the steel wire screw sleeve hole 13, the square plane of the reference positioning block 1 performs reference alignment for the X axis and the Y axis of the milling machine, and the positioning pin extends into the equipment matching hole to position the hole position of the steel wire screw sleeve hole 13. The limiting plate 4 and the bottom plate 2 are combined to prevent the bottom plate from rotating, and the limiting plate 4 is attached to the inner circular surface 14 of the end frame to limit the inclination angle of the hole. And the drill jig is fixed on the cabin body through the cooperation of bolts from the end face of the cabin body and threaded holes in the positioning pins 3. In order to prevent the end face of the bolt from being scratched, a soft cushion block 10 can be padded on the end face of the cabin.

Further, the included angle between the limiting plate 4 and the bottom plate 2 is the angle between the inner circular surface of the end frame of the cabin body and the excessive inclined surface, so that the angle of the die hole 6 on the bottom plate 2 is consistent with the angle of the steel wire screw sleeve hole 13 to be processed.

Further, in order to avoid over positioning, an avoidance groove 5 is formed at the included angle between the limiting plate 4 and the bottom plate 2.

Further, the number and positions of the die holes 6 correspond to those of the steel wire screw sleeve holes 13 of the cabin body.

Further, the top of the locating pin 3 is processed into an inclined plane with the same size as the excessive inclined plane of the cabin body, and the inclined direction faces the limiting plate 4. The locating pin is prevented from extending out of the end face of the cabin body to interfere with the machining path of the milling machine.

Further, the length of the limiting plate 4 is smaller than the width of the inner circular surface of the cabin end frame in the same way.

Furthermore, in order to facilitate alignment of the milling machine, the reference positioning block 1 is square.

Further, the end face of the bottom plate 2 has the same size and shape as the countersink groove of the cabin.

When the inner circular surface of the end frame is selected as a reference, the problem of the degree of freedom in the diagonal direction is solved, and the end surface selected as a positioning reference in the vicinity thereof is: the through hole of the end face phi 24 (reference A) is close to the machined hole on the boss of the inner cavity of the end frame (reference B). The reference A is not in the same plane any more because the included angle between the normal direction of the countersink inclined plane and the axis of the phi 24 through hole is 35 degrees, so that the reference A is eliminated. The reference B is used for eliminating the fact that the size and the position distribution of the boss in the inner cavity of the end frame are irregular, and the countersunk inclined surface at the 12 position is used for independently finding out the machined hole of the boss as the reference, so that the machined hole is not universal. The countersunk inclined plane at each position of the datum C is universal and is close to the position of the feature to be processed, and from the consideration of tooling machining manufacturability, the structure is compact, blank materials are saved, so that the datum C is selected as an angular limiting datum.

Claims

1. The utility model provides an internal inclined hole jig frock of cabin, includes benchmark locating piece (1), bottom plate (2), locating pin (3), limiting plate (4), its characterized in that: the base plate (2) is fixed on the reference positioning block (1), the positioning pin (3) is fixed on the base plate (2), the reference positioning block (1), the base plate (2) and the positioning pin (3) are concentric, the limiting plate (4) is fixed on the side face of the base plate (2) at a certain angle, the center of the positioning pin (3) is provided with a threaded hole (7) in a machining mode, the threaded hole (7) simultaneously penetrates through the reference positioning block (1) and the base plate (2), a plurality of die holes (6) are uniformly machined in the base plate (2), and the die holes (6) simultaneously penetrate through the reference positioning block (1).

2. The in-cabin inclined hole drilling jig tool as set forth in claim 1, wherein: the included angle between the limiting plate (4) and the bottom plate (2) is the angle between the inner circular surface of the end frame of the cabin body and the excessive inclined surface.

3. The in-cabin inclined hole drilling jig tool as set forth in claim 2, wherein: an avoidance groove (5) is formed in the included angle between the limiting plate (4) and the bottom plate (2).

4. The in-cabin inclined hole drilling jig tool as set forth in claim 1, wherein: the number and the positions of the die holes (6) are corresponding to those of the steel wire screw sleeve holes (13) of the cabin body.

5. The in-cabin inclined hole drilling jig tool as set forth in claim 1, wherein: the top of the locating pin (3) is processed into an inclined plane with the same size as the excessive inclined plane of the cabin body, and the inclined direction faces the limiting plate (4).

6. The in-cabin inclined hole drilling jig tool as set forth in claim 1, wherein: the length of the limiting plate (4) is smaller than the width of the inner circular surface of the cabin end frame.

7. The in-cabin inclined hole drilling jig tool as set forth in claim 1, wherein: the reference positioning block (1) is square.

8. The in-cabin inclined hole drilling jig tool as set forth in claim 1, wherein: the end face of the bottom plate (2) is the same as the countersink groove of the cabin body in size and shape.