Split-type mold for wheel casting

Patent metadata

Field	Value
Publication number	US-9616491-B2
Application number	US-201615184090-A
Country	US
Kind code	B2
Filing date	Jun 16, 2016
Priority date	Jun 16, 2015
Publication date	Apr 11, 2017
Grant date	Apr 11, 2017

Abstract

The invention provides a split-type mold for wheel casting, the mold having an upper die, a split-type water-cooling side die and a lower die, and the split-type water-cooling side die is divided into four pieces along a circumferential direction of the wheel mold. A thermal deformation arc compensation surface is machined on ¼ arc portion of each split-type water-cooling lower side die, and a compensation surface is machined on key portions of 45-degree matching surfaces of adjacent split-type water-cooling upper side dies. The side die can effectively solve the problems such as untight matching between the matching surfaces, flashes of the matching surfaces and aluminum sticking and the like due to the thermal deformation and non-homogeneous expansion and shrinkage of the two portions of the split-type water-cooling side die.

First claim

The invention claimed is:

1. A split-type mold for wheel casting, the mold comprising:
an upper die, a split-type water-cooling side die and a lower die, the split-type water-cooling side die being divided into four pieces along a circumferential direction of a wheel mold, and further comprising:
a thermal deformation arc compensation surface having points B, C as end points and passing through point E is machined on ¼ arc matching surface of a lower side die of each split-type water-cooling side die, that is an arc surface matched with a side wall of the lower die; a distance from the point E on the thermal deformation arc compensation surface to a point F on an original arc is 0.2 mm to 0.5 mm; and the points B, C are located on the original arc and respectively have a distance of 60 mm to 80 mm to a 45-degree matching surface;
compensation surfaces are machined on key portions of 45-degree matching surfaces of adjacent split-type upper side dies, that is matching surfaces of four side dies, such that V-gaps are formed on the 45-degree matching surfaces of the side dies in a cold state when adjacent split-type upper side dies are matched, with a gap clearance of 0.2 mm to 0 4 mm on the side die inner circumference, and there is no gap on the side die inner circumference when 45-degree matching surfaces of split-type lower side dies, i.e. matching surfaces of four side dies, are in a matching state.

2. The mold according to claim 1 , wherein the distance from the point E to the point F is 0.2 mm.

3. The mold according to claim 1 , wherein the gap clearance on the side die inner circumference is 0.3 mm when the 45-degree matching surfaces of the split-type upper side dies are in a matching state.

4. The mold according to claim 1 , wherein the range of the V-gap on the 45-degree matching surface of the spit-type upper side die is located between points I and J, wherein a point I is a parting surface of the spit-type upper side die and the spit-type lower side die, and the point J is a tangent point between a 9-degree slope of a hub inner rim and an arc.

Assignees

• Citic Dicastal Co Ltd

Inventors

• Zhou Peng
• Wang Yongning
• Zhu Zhihua
• Li Changhai
• Li Hongbiao
• Xue Xiwei
• Li Yong
• Wang Gui
• Kang Longtao
• Zhang Donghui

Classifications

• B22C9/28

  for wheels, rolls, or rollers {(B22D15/005 takes precedence)} · CPC title

• B22D18/04

  Low pressure casting, i.e. making use of pressures up to a few bars to fill the mould · CPC title

• B22C9/065 Primary

  Cooling or heating equipment for moulds · CPC title