CN214700253U

CN214700253U - Punching tapping-free structure

Info

Publication number: CN214700253U
Application number: CN202120503895.6U
Authority: CN
Inventors: 高泽涛; 高免
Original assignee: Cangzhou Xinjun Hardware Products Co ltd
Current assignee: Cangzhou Xinjun Hardware Products Co ltd
Priority date: 2021-03-10
Filing date: 2021-03-10
Publication date: 2021-11-12
Anticipated expiration: 2031-03-10

Abstract

The utility model relates to a punching press technical field specifically is a tapping structure is exempted from in punching a hole, including the metal sheet, the middle part of metal sheet is provided with the through-hole, be equipped with the several lug on the circumference inner wall of through-hole, every the lug all is vertical bar form setting, several the lug is even setting, through direct screw in bolt in the through-hole, several lug in the screw extrusion through-hole on the bolt, the several lug takes place deformation, and the several lug warp to and adjacent lug clearance department simultaneously to the through-hole forms the screw hole, makes the production technology of this structure more simple to it is comparatively convenient when using, has reduced the disability rate of work piece by a wide margin.

Description

Punching tapping-free structure

Technical Field

The utility model relates to a punching press technical field specifically is a tapping structure is exempted from to punch a hole.

Background

As is well known, a press machine is a punching press. In national production, the stamping process has the advantages of material and energy conservation, high efficiency, low technical requirement on operators and capability of making products which cannot be machined through various die applications compared with the traditional machining, so that the stamping process has wider and wider application.

In the process of stamping, external force is applied to plates, strips, pipes, profiles and the like through dies such as a single stamping die, a progressive die and the like in production to enable the plates, the strips, the pipes, the profiles and the like to generate plastic deformation or separation, so that workpieces or stamped parts with required shapes and sizes can be obtained, blanking, punching, forming, deep drawing, trimming, fine stamping, shaping, riveting, extruding and the like can be performed, and the method is widely applied to various fields. For example, a great number of accessories such as switch sockets, cups, cupboards, dishes, computer cases and even missile aircraft … … can be produced by a punch through a die.

And in the punching press production at the punch press, if want to make the screw hole on the metal sheet when, need punch a hole at the punch press after, carry out the tapping again, and in the tapping, adopt tapping or automatic tapping etc. in the mould for a bit, there are some circumstances that are difficult to avoid to appear, if behind tapping and automatic tapping in the mould, be difficult to or can't detect the quality of its tapping, cause easily that batch or big batch leak attack, the thread slipping phenomenon appears very easily, be difficult to guarantee its quality, once produce the error when the tapping, probably there is condemned risk in whole work piece, and its production technology is comparatively complicated, take trouble and laboursome.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a to the not enough of prior art, the utility model provides a use more convenient and produce more convenient structure of exempting from to tap of punching a hole.

(II) technical scheme

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a structure of tapping is exempted from in punching a hole, includes the metal sheet, the middle part of metal sheet is provided with the through-hole, be equipped with the several lug on the circumference inner wall of through-hole, every the lug all is the setting of vertical retort form, several the lug is even setting.

Furthermore, each lug all is half cylinder setting.

Furthermore, the contact part of the circumferential surface of each lug and the circumferential inner wall of the through hole is arc-shaped.

Further, the metal plate is an aluminum plate.

Furthermore, the top end of the through hole is provided with a chamfer.

Further, the angle of the chamfer is 45 degrees.

(III) advantageous effects

Compared with the prior art, the utility model provides a tapping structure is exempted from in punching a hole possesses following beneficial effect:

this structure of tapping exempts from punches a hole, through direct screw in bolt in the through-hole, several lug in the screw extrusion through-hole on the bolt, the deformation takes place for the several lug, simultaneously the several lug to with adjacent lug between clearance department warp, thereby the through-hole forms the screw hole, the production technology who makes this structure is simpler, and it is comparatively convenient when using, the disability rate of work piece has been reduced by a wide margin, through-hole through this structure is under the extrusion of the screw thread of bolt, take place deformation and form the screw hole, make this structure can carry out used repeatedly with the screw hole of today the same.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention;

FIG. 2 is a schematic top view of a portion of the through-hole shown in FIG. 1 according to the present invention;

fig. 3 is a schematic structural view of embodiment 1 of the present invention in use;

fig. 4 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 5 is a schematic top view of a portion of the through-hole shown in FIG. 4 according to the present invention;

fig. 6 is a schematic structural view of embodiment 2 of the present invention in use.

In the figure: 1. a metal plate; 2. a through hole; 3. and (4) a bump.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1:

referring to fig. 1-3, the tapping-free structure for punching holes of the present invention comprises a metal plate 1, in this embodiment, the metal plate 1 is a thicker aluminum plate, a through hole 2 is formed in the middle of the metal plate 1, in this embodiment, after the through hole 2 is directly punched on the metal plate 1, the metal plate 1 is thicker, so that the through hole 2 has better rigidity and connection stability, a plurality of bumps 3 are disposed on the inner circumferential wall of the through hole 2, each bump 3 is arranged in a vertical bar shape, the plurality of bumps 3 are arranged uniformly, each bump 3 is arranged in a semi-cylindrical shape, the contact portion between the circumferential surface of each bump 3 and the inner circumferential wall of the through hole 2 is arranged in an arc shape, the top end of the through hole 2 is provided with a chamfer, and the angle of the chamfer is 45 degrees, in this embodiment, by directly screwing in the bolt into the through hole 2 during use, the thread on the bolt extrudes the plurality of bumps 3 in the through hole 2, the plurality of projections 3 are deformed, and the plurality of projections 3 are deformed toward the gaps between the adjacent projections 3, so that the through-holes 2 are formed as threaded holes.

Example 2:

referring to fig. 4-6, the tapping-free structure for punching holes of the present invention comprises a metal plate 1, in this embodiment, the metal plate 1 is a thin aluminum plate, a through hole 2 is formed in the middle of the metal plate 1, in this embodiment, a curled edge is punched at the bottom of the through hole 2 of the metal plate 1 during punching, so that the length of the through hole 2 is extended, the structure has good rigidity and connection stability when used on the thin aluminum plate, a plurality of bumps 3 are arranged on the inner circumferential wall of the through hole 2, each bump 3 is arranged in a vertical bar shape, the plurality of bumps 3 are uniformly arranged, each bump 3 is arranged in a semi-cylindrical shape, the contact portion between the circumferential surface of each bump 3 and the inner circumferential wall of the through hole 2 is arranged in an arc shape, the top end of the through hole 2 is provided with a chamfer, and the angle of the chamfer is 45 degrees, in this embodiment, a bolt is directly screwed into the through hole 2 during use, the screw thread on the bolt presses the through hole 2 and the plurality of projections 3 in the turned edge to deform the through hole 2 and the plurality of projections 3 in the turned edge, and the plurality of projections 3 in the through hole 2 and the turned edge deform toward the gap between the adjacent projections 3, thereby forming a threaded hole between the through hole 2 and the turned edge.

The utility model discloses a structure of tapping is exempted from in punching a hole still needs to explain, and the material of metal sheet also can be materials such as copper, aluminum alloy, the utility model discloses do not restrict the concrete material of its metal sheet.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a structure of tapping is exempted from in punching a hole which characterized in that: including metal sheet (1), the middle part of metal sheet (1) is provided with through-hole (2), be equipped with several lug (3) on the circumference inner wall of through-hole (2), every lug (3) all are vertical retort form setting, several lug (3) are even setting.

2. A punch-through, tapping-free structure as recited in claim 1, wherein: each lug (3) is arranged in a semi-cylindrical shape.

3. A punch-through, tapping-free structure as recited in claim 1, wherein: the contact part of the circumferential surface of each lug (3) and the circumferential inner wall of the through hole (2) is arc-shaped.

4. A punch-through, tapping-free structure as recited in claim 1, wherein: the metal plate (1) is an aluminum plate.

5. A punch-through, tapping-free structure as recited in claim 1, wherein: and a chamfer is arranged at the top end of the through hole (2).

6. The punch-through, tapping-free structure of claim 5, wherein: the angle of the chamfer is 45 degrees.