CN211494231U

CN211494231U - Aluminum auxiliary frame claw hole structure easy to demould and small in deformation

Info

Publication number: CN211494231U
Application number: CN201921833169.XU
Authority: CN
Inventors: 马小佳
Original assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Current assignee: Wanxiang Qianchao Co Ltd; Wanxiang Group Corp
Priority date: 2019-10-29
Filing date: 2019-10-29
Publication date: 2020-09-15
Anticipated expiration: 2029-10-29

Abstract

The utility model discloses an aluminum auxiliary frame claw hole structure with easy demoulding and small deformation, which relates to the field of automobile parts and mainly comprises a claw arm arranged at the front part of an aluminum alloy auxiliary frame and a claw hole arranged at the center of the top of the claw arm; the horn holes are blind holes. The utility model has the advantages that: through holes which are communicated with the upper part and the lower part of a ram-horn hole of a blank piece of an aluminum alloy auxiliary frame are changed into blind holes, so that the hole site depth of the ram-horn hole of the blank piece is reduced to 16mm from 49.2mm, and the ram is arranged on the ram-horn hole and the dieHas a contact area of 1970mm²Reduced to 701mm²The stroke of drawing out of the convex rod on the mould in the demoulding process is reduced 2/3, the adhesion force between the claw hole and the convex rod is reduced greatly, so that the adhesion surface between the auxiliary frame blank and the convex rod on the mould in the casting demoulding process is reduced, the blank is easy and smooth to separate, the deformation of the claw position is reduced, the problem of deviation of the claw hole after machining is effectively improved, and the waste rate of a product material is greatly reduced.

Description

Aluminum auxiliary frame claw hole structure easy to demould and small in deformation

Technical Field

The utility model relates to an automobile parts's field, concretely relates to aluminium sub vehicle frame goat's horn hole structure of easy demoulding, little deflection.

Background

The aluminum alloy auxiliary frame of the automobile is connected with the front part of the automobile body through a horn arm and a horn hole which are arranged on the auxiliary frame, and the horn hole is generally formed in a blank casting and machining mode to obtain a required hole position.

The current aluminum alloy sub vehicle frame blank goat's horn pore structure is the through-hole that link up from top to bottom, the hole site degree of depth reaches 49.2mm, because protruding pole on blank goat's horn hole and the mould is closely laminated when the aluminum sub vehicle frame low pressure is cast is in the same place, and the aluminum alloy has stronger adhesion to iron spare, the goat's horn hole is easy to be even with protruding pole on the mould when the aluminum sub vehicle frame blank is demolded, cause blank drawing of patterns not smooth, the goat's horn warp, protruding pole surface adhesion aluminium need paint with a brush often simultaneously, can influence casting process beat scheduling problem, and the subsequent machining process of the blank that the deflection is big also receives great influence, cause the product material waste rate more than 30%.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the not enough of prior art existence, and provide an aluminium sub vehicle frame goat's horn hole structure of easy drawing of patterns, little deflection, it is smooth and easy to have the drawing of patterns deflection, the process, and goat's horn hole location is accurate, the advantage that the product material disability rate reduces by a wide margin.

The purpose of the utility model is accomplished through following technical scheme: the horn hole structure of the aluminum auxiliary frame with easy demoulding and small deformation mainly comprises a horn arm arranged at the front part of the aluminum auxiliary frame and a horn hole arranged at the center of the top part of the horn arm; the horn holes are blind holes.

Preferably, the hole depth of the horn holes is 16 mm.

The utility model has the advantages that: through holes which are communicated with the upper part and the lower part of a ram-horn hole of a blank piece of the aluminum alloy auxiliary frame are changed into blind holes, so that the hole site depth of the ram-horn hole of the blank piece is reduced to 16mm from 49.2mm, and the contact area of the ram-horn hole and an upper convex rod of a die is 1970mm²Reduced to 701mm²The stroke of drawing out of the convex rod on the mould in the demoulding process is reduced 2/3, the adhesion force between the claw hole and the convex rod is reduced greatly, so that the adhesion surface between the auxiliary frame blank and the convex rod on the mould in the casting demoulding process is reduced, the blank is easy and smooth to separate, the deformation of the claw position is reduced, the problem of deviation of the claw hole after machining is effectively improved, and the waste rate of a product material is greatly reduced.

Drawings

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

Figure 2 is a top view of the sheepskin hole.

Fig. 3 is a sectional view a-a of fig. 2.

Description of reference numerals: aluminum alloy auxiliary frame 1, goat's horn arm 2, goat's horn hole 3.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings:

example (b): as shown in attached figures 1 and 2, the horn hole structure of the aluminum auxiliary frame with easy demoulding and small deformation mainly comprises a horn arm 2 arranged at the front part of the aluminum auxiliary frame 1 and a horn hole 3 arranged at the center of the top part of the horn arm 2; the horn holes 3 are blind holes.

Preferably, the hole depth of the claw holes 3 is 16mm, and is only 1/3 of the depth of the through holes, so that the extraction stroke of the convex rods on the mold during demolding is reduced by 2/3; the contact area between the claw hole 3 and the upper convex rod of the die is only 701mm²。

The utility model discloses with the through-hole structural change of 1 blank goat's horn hole 3 of aluminum alloy sub vehicle frame for the blind hole structure that the draft angle increases (as shown in figure 3), increase the draft angle by 2 to 4 to reach the area of contact that reduces protruding pole on aluminum sub vehicle frame blank goat's horn hole and the casting mould, shorten the drawing stroke of the protruding pole on the drawing of patterns in-process mould and reduce the glutinous even purpose of power between the protruding pole on goat's horn hole and the mould. The depth of the hole site of the horn hole on the blank is reduced from 49.2mm to 16mm, and the contact area of the horn hole and the convex rod on the die is 1970mm²Reduced to 701mm²The extraction stroke of the convex rod on the mould is reduced in the demoulding process2/3, the adhesion force between the cleat hole 3 and the protruding rod is greatly reduced. The blank is guaranteed to be easily and smoothly separated, meanwhile, the coating frequency of the upper protruding rod of the die is reduced from the original coating frequency of each die to the coating frequency of 4-5 dies, and the production takt is accelerated. Finally, the deformation of the claw arm 2 and the claw hole 3 is greatly reduced, the problem of deviation of the claw hole after machining is effectively improved, and the waste rate of the blank is reduced from more than 30% to less than 5%.

It should be understood that equivalent substitutions or changes to the technical solution and the inventive concept of the present invention should be considered to fall within the scope of the appended claims for the skilled person.

Claims

1. The utility model provides an easy demoulding, aluminium sub vehicle frame goat's horn hole structure of little deflection which characterized in that: mainly comprises a horn arm (2) arranged at the front part of an aluminum alloy auxiliary frame (1) and a horn hole (3) arranged at the center of the top part of the horn arm (2); the horn holes (3) are blind holes.

2. The easy-to-release small-deformation aluminum subframe claw hole structure as claimed in claim 1, wherein: the depth of the horn holes (3) is 16 mm.