CN216656463U

CN216656463U - Simple mould for drilling multiple holes in sunken arc-shaped sheet

Info

Publication number: CN216656463U
Application number: CN202122736768.3U
Authority: CN
Inventors: 李利华; 张永利
Original assignee: China Ordnance Industry Group Aviation Ammunition Research Institute Co ltd
Current assignee: China Ordnance Industry Group Aviation Ammunition Research Institute Co ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-06-03
Anticipated expiration: 2031-11-10

Abstract

A simple clamping fixture for drilling a plurality of holes in a sunken arc-shaped sheet relates to a simple clamping fixture, in particular to a simple clamping fixture for drilling a plurality of holes in a sunken arc-shaped sheet. The utility model aims to solve the problems that a sunken arc-shaped sheet structure is easy to deform and inconvenient to directly clamp and align, a drilling surface is an arc surface, and a drill bit cannot be accurately positioned, so that a part drilled cannot meet the precision requirement of a drawing, and the processing quality of the part is influenced. The utility model comprises a drill die body and a fastening assembly; the drilling die body is fixedly connected with the workpiece through the fastening assembly, and a plurality of drill holes are formed in the upper surface of the drilling die body. The utility model belongs to the field of machining.

Description

Simple mould for drilling multiple holes in sunken arc-shaped sheet

Technical Field

The utility model relates to a simple mould, in particular to a simple mould for drilling a plurality of holes in a sunken arc-shaped sheet, and belongs to the field of machining.

Background

The sunken arc-shaped sheet structure is easy to deform, is inconvenient to directly clamp and align, and the drilling surface of the sunken arc-shaped sheet structure is an arc surface, so that a drill bit cannot be accurately positioned, parts drilled cannot meet the precision requirement of a drawing, and the processing quality of the parts is affected. Therefore, a special clamp needs to be designed for drilling the sunken arc-shaped sheet part, the clamp can be used for conveniently clamping and disassembling the part, the position precision required by a part drawing can be ensured, the production efficiency is improved, and the requirement of batch production is met.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that a sunk arc-shaped sheet structure is easy to deform and inconvenient to directly clamp and align, a drilling surface is an arc surface, and a drill bit cannot be accurately positioned, so that a part drilled cannot meet the precision requirement of a drawing, and the processing quality of the part is influenced, and further provides a simple mould for drilling a plurality of holes on the sunk arc-shaped sheet.

The technical scheme adopted by the utility model for solving the problems is as follows: the utility model comprises a drill die body and a fastening assembly; the drilling die body is fixedly connected with the workpiece through the fastening assembly, and a plurality of drill holes are formed in the upper surface of the drilling die body.

Furthermore, the drill jig body is a rectangular plate body, the upper surface of the drill jig body is an upward convex arc surface, the upper surface of the drill jig body is provided with a through hole, and the fastening assembly is inserted into the through hole.

Further, the through hole is a circular through hole.

Further, the fastening assembly comprises a bolt and a fastening nut; the bolt is inserted in the through hole, and the fastening nut is sleeved on the bolt.

Further, the bolt is a hexagon head bolt.

Furthermore, the utility model also comprises a plurality of drill jigs, and one drill jig is inserted in each drill hole.

The utility model has the beneficial effects that: the utility model accurately positions and clamps the sunken arc-shaped sheet part and simultaneously drills a plurality of holes, thereby not only overcoming the technical problems that the part is easy to deform and difficult to clamp and the positioning of the drill bit is inaccurate, but also meeting the requirement of batch production of the part. The clamp has the advantages of simple structure, quick clamping, short processing period and high production efficiency, and can be popularized to the machining process technology.

Drawings

FIG. 1 is a front view of the present invention mounted on a workpiece;

FIG. 2 is a top view of the present invention mounted on a workpiece;

FIG. 3 is a top view of the drill body;

fig. 4 is a sectional view taken along line a-a in fig. 1.

Detailed Description

The first embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, and the simple mold for drilling a plurality of holes on a sunken arc-shaped sheet in the embodiment comprises a mold body 1 and a fastening assembly; the drilling die body 1 is fixedly connected with a workpiece through the fastening assembly, and the upper surface of the drilling die body 1 is provided with a plurality of drill holes 1-1.

The second embodiment is as follows: the embodiment is described with reference to fig. 1 to 4, the jig body 1 of the simple clamping fixture for drilling a plurality of holes on a sunken arc-shaped thin plate in the embodiment is a rectangular plate, the upper surface of the jig body 1 is an upward convex arc surface, the upper surface of the jig body 1 is provided with a through hole 1-2, and the fastening assembly is inserted into the through hole 1-2. Other components and connections are the same as those in the first embodiment.

The third concrete implementation mode: the present embodiment is described with reference to fig. 1 to 4, and the through hole 1-2 of the simple mold for drilling a plurality of holes in the sunken arc-shaped sheet according to the present embodiment is a circular through hole. Other components and connection relationships are the same as those in the second embodiment.

The fourth concrete implementation mode: the embodiment is described with reference to fig. 1 to 4, and the fastening assembly of the simple clamping fixture for drilling a plurality of holes on the sunken arc-shaped thin plate in the embodiment comprises a bolt 2 and a fastening nut 3; the bolt 2 is inserted into the through hole 1-2, and the fastening nut 3 is sleeved on the bolt 2. Other components and connection relationships are the same as those in the first or second embodiment.

The fifth concrete implementation mode: the present embodiment will be described with reference to fig. 1 to 4, and the bolt 2 of the simple jig for drilling a plurality of holes in the depressed arc-shaped sheet according to the present embodiment is a hexagon head bolt. Other components and connection relationships are the same as those in the fourth embodiment.

The sixth specific implementation mode is as follows: the embodiment is described with reference to fig. 1 to 4, and the simple mold for drilling a plurality of holes in a sunken arc-shaped sheet further includes a plurality of drilling jigs 4, and one drilling jig 4 is inserted into each drilling hole 1-1. Other components and connections are the same as those in the first embodiment.

Principle of operation

The sunken arc surface of the workpiece is tightly buckled on the convex surface of the drill jig body 1, and the left side vertical surface of the workpiece is tightly close to the annular convex end of the drill jig body 1, so that the central axes of the drill jig body 1 and the workpiece are consistent. The positioning device has the advantages that the workpiece is screwed in place through the elongated hole of the workpiece and the round hole of the drill jig body 1 by the hexagon head bolt 2 and the fixing nut 3, no play between the workpiece and the drill jig body 1 in any direction is guaranteed, and the positioning is accurate. And drilling the workpiece on a drilling machine through the drill bushing 4. After the machining is finished, the fixing nut 3 is loosened, the hexagon head bolt 2 is taken down, the drill die body 4 is removed, and the drilling machining is finished.

The workpiece and the clamp are clamped up and down, and the workpiece is drilled from the inner side arc surface of the drill die body 1 to the outer side. Because the inner side arc surface of the workpiece has a lower limit, the workpiece and the inner side arc surface can be tightly attached, the positioning is accurate, the arc surfaces do not move in the direction of the arc surfaces, and the corresponding positions of the outer side arc surfaces contacted with the workpiece are designed to be bulges, so that the central axes of the workpiece and the outer side arc surfaces are consistent. As the dimension lines of all holes on the workpiece are based on the vertical surface of the left side of the workpiece, the left side of the contact surface of the drill die body 1 and the workpiece is designed to be an annular convex reference surface, the positioning function is realized on the workpiece, the reference is unified, and parts drilled are interchangeable. The workpiece is provided with a long hole, in order to facilitate clamping and dismounting of the workpiece, a round hole is drilled at the corresponding position after the workpiece and the drill jig body 1 are assembled, the hole diameter of the round hole is larger than that of the long hole, fine adjustment in the left-right direction of the long hole of the workpiece can be carried out in the clamping process, then the hexagonal head bolt 2 and the fixing nut 3 are used for fixing, the outer diameter of the hexagonal head bolt 2 is consistent with that of the long hole, if the workpiece does not have a hole and can be used, and the workpiece and the long hole can be clamped and fixed by universal force after being assembled in place. The sizes of drill holes 1-1 on the drill die body 1 are in interference fit with the outer diameter of the drill bushing 4 respectively, the drill bushing 4 is made of tool steel, the hardness is high through heat treatment, the wear resistance is good, and the drill bushing is replaced after the drill bushing 4 is worn. The drill bushing 4 plays a role in positioning and guiding the drilling tool, and the position accuracy of drilling is guaranteed. The size of the inner hole of the drill bushing 4 is in clearance fit with the drilling tool. In order to ensure that the cutter is accurately positioned during drilling, the length of the drill sleeve 4 is slightly less than the thickness of the drill die body 1, and a small gap is reserved between the bottom of the drill sleeve 4 and a part.

Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the utility model as defined by the appended claims.

Claims

1. The utility model provides a simple and easy mould of subside arc sheet drilling a plurality of holes which characterized in that: the simple mould for drilling a plurality of holes on the sunken arc-shaped sheet comprises a drilling mould body (1) and a fastening assembly; the drilling die body (1) is fixedly connected with a workpiece through the fastening assembly, and a plurality of drill holes (1-1) are formed in the upper surface of the drilling die body (1).

2. The simple clamping fixture for drilling a plurality of holes in the sunken arc-shaped sheet of claim 1, wherein: the drilling die body (1) is a rectangular plate body, the upper surface of the drilling die body (1) is an upward convex arc surface, the upper surface of the drilling die body (1) is provided with a through hole (1-2), and the fastening assembly is inserted into the through hole (1-2).

3. The simple clamping fixture for drilling a plurality of holes in the sunken arc-shaped sheet as claimed in claim 2, wherein: the through holes (1-2) are circular through holes.

4. The simple clamping fixture for drilling a plurality of holes in the sunken arc-shaped sheet as claimed in claim 1 or 2, wherein: the fastening assembly comprises a bolt (2) and a fastening nut (3); the bolt (2) is inserted into the through hole (1-2), and the fastening nut (3) is sleeved on the bolt (2).

5. The simple clamping fixture for drilling a plurality of holes in the sunken arc-shaped sheet as claimed in claim 4, wherein: the bolt (2) is a hexagon head bolt.

6. The simple clamping fixture for drilling a plurality of holes in the sunken arc-shaped sheet as claimed in claim 1, wherein: the simple mould for drilling the plurality of holes in the sunken arc-shaped sheet further comprises a plurality of drilling jigs (4), and one drilling jig (4) is inserted into each drilling hole (1-1).