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Hole inner wall side chamfer punching device

A hole inner wall and chamfering technology, which is applied in the structural design and application field, can solve the problem of chamfering and deflection of three holes in the shell cavity

Active Publication Date: 2017-04-26
沈阳兴华航空电器有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problem of chamfer deflection in the three holes of the shell cavity and the riveting problem caused by it

Method used

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  • Hole inner wall side chamfer punching device
  • Hole inner wall side chamfer punching device
  • Hole inner wall side chamfer punching device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The hole inner wall side chamfering punching device is composed as follows: the hole inner wall chamfering punching device is composed as follows: lower fixing plate 1, inserting plate 2, lower punch 3, pillar 4, first pin 5, upper fixing plate 6 , the upper punch 7, the second pin 8, the bolt 9, the third pin 10 and the guide post 11; wherein, the pillar 4 is a columnar structure with an asymmetrical ellipse in section, and the two semi-arc contact ends of the asymmetrical ellipse There is an R5 chamfer structure 43, the half arc on one side of the asymmetric ellipse can be positioned and matched with the inner diameter of the punched part, and the form of the R5 chamfer structure 43 at the contact end of the two half arcs of the asymmetric ellipse ensures that the part can be inserted and taken out smoothly. The pillar 4 includes an axial stepped through hole 41 and a first radial through hole 42, the axial stepped through hole 41 and the first radial through hole 42 c...

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Abstract

The invention discloses a hole inner wall side chamfer punching device. The hole inner wall side chamfer punching device consists of a lower fixed plate (1), an insertion plate (2), a lower punch (3), a support column (4), a first pin (5), an upper fixed plate (6), an upper punch (7), a second pin (8), a bolt (9), a third pin (10) and a guide column (11), wherein the stand column (4) is a columnar structure with a section as an asymmetric ellipse; and R5 chamfer structures (43) are arranged at two semiarc contact ends of the asymmetric ellipse. The hole inner wall side chamfer punching device solves the problem of inner chamfer inclination caused by old locksmith drilling, guarantees the part inner chamfer machining quality, satisfies the clamping pin riveting force requirements, is particularly important in improvement of the product quality stability, and is important in application value in machining of other similar part structures.

Description

technical field [0001] The invention relates to the technical field of structural design and application of a chamfering punching device, and in particular provides a chamfering punching device for the inner wall of a hole. Background technique [0002] A large number of housings in the connector exist in the processing technology of the inner chamfering of the three horizontal holes of the housing cavity. For details, refer to the attached figure 1 , due to the limited space on the inner wall, the chamfering process is performed by drilling, so that the chamfering is deflected. The smaller the shell hole, the larger the deflection angle. Especially when the chamfered part is used for riveting bayonet pins, the deflection of the chamfered corners will easily lead to unreliable riveting, unqualified riveting force, and hidden quality problems. [0003] People urgently hope to obtain a kind of hole inner wall side chamfer punching device with excellent technical effect. Con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D19/08B21D43/00
CPCB21D19/08B21D43/003
Inventor 庞金红南艳明高成刚包望
Owner 沈阳兴华航空电器有限责任公司
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