Trimming die for casting of front steering knuckle in double-wishbone suspension

Patent metadata

Field	Value
Publication number	US-11123786-B2
Application number	US-202016830340-A
Country	US
Kind code	B2
Filing date	Mar 26, 2020
Priority date	Jun 27, 2019
Publication date	Sep 21, 2021
Grant date	Sep 21, 2021

Abstract

The present disclosure relates to the technical field of trimming dies and specifically relates to a trimming die for a casting of a front steering knuckle in a double-wishbone suspension. The trimming die includes an upper roof, an intermediate plate, a movable plate, a base, springs, connecting columns, a pressing block connecting rod, a cutting edge, a pressing block, a casting, hold-down blocks, a first supporting block and second supporting blocks.

First claim

The invention claimed is:

1. A trimming die for a casting of a front steering knuckle in a double-wishbone suspension, comprising a base, a first supporting block, second supporting blocks and an upper die, wherein
the base is located at a bottom of the die, the first supporting block and the second supporting blocks are fixedly arranged on the base, a gooseneck of the casting is supported by the first supporting block, the remaining parts of the casting are supported by the second supporting blocks, the upper surfaces of the first supporting block and the second supporting blocks are respectively adapted to the shapes of the corresponding bottom surfaces of the casting, the second supporting blocks are in complete contact with the casting, and a gap is reserved between the first supporting block and the casting; and
the upper die comprises a pressing block, hold-down blocks and a cutting edge, the pressing block is located over a goose head of the casting, the hold-down blocks are located over the remaining parts of the casting, and the pressing block and the hold-down blocks are respectively adapted to the shapes of the corresponding upper surfaces of the casting; the cutting edge is used for clearing fins of the casting, and the pressing block and the cutting edge are capable of moving synchronously; and when the die is closed, the casting is held down by the hold-down blocks pressing against the upper surface, except for the goose head, of the casting, the fins of the casting are cleared by the cutting edge, and the pressing block presses against the goose head of the casting and is in interference fit with the goose head of the casting to realize the correction of the casting.

2. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 1 , wherein the side face, facing the hold-down blocks, of the pressing block is provided with an extension part adapted to the goose head of the casting in shape, and the extension part extends along the gap between the goose head of the casting and the hold-down blocks; and with the downward pressing of the pressing block, the extension part can be in interference fit with the goose head of the casting.

3. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 2 , wherein the upper die further comprises an upper roof, an intermediate plate, a movable plate, a plurality of springs, a plurality of connecting columns and a pressing block connecting rod; the intermediate plate is fixedly connected to a bottom surface of the upper roof by a plurality of connecting columns, the movable plate is located between the upper roof and the intermediate plate and is capable of moving up and down relative to the upper roof, the cutting edge is fixedly arranged on a bottom surface of the intermediate plate, and the pressing block is fixedly arranged on the bottom surface of the intermediate plate by the pressing block connecting rod; the plurality of springs are arranged between the movable plate and the upper roof, and the hold-down blocks are located below the intermediate plate and are fixedly arranged on a bottom surface of the movable plate by a plurality of connecting columns; the intermediate plate is provided with through holes for allowing the plurality of connecting columns on the bottom surface of the movable plate to pass through in positions corresponding to the connecting columns on the bottom surface of the movable plate; and the movable plate is provided with through holes for allowing the plurality of connecting columns on the bottom surface of the upper roof to pass through in positions corresponding to the connecting columns on the bottom surface of the upper roof.

4. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 3 , wherein the length of the pressing block connecting rod is adjustable.

5. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 3 , wherein the pressing block connecting rod is detachably connected with the pressing block and the intermediate plate.

6. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 3 , wherein both the pressing block and the first supporting block are detachable, so that the heights of the pressing block and the first supporting block can be conveniently adjusted to adapt to castings with different deformations.

7. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 1 , wherein the upper die further comprises an upper roof, an intermediate plate, a movable plate, a plurality of springs, a plurality of connecting columns and a pressing block connecting rod; the intermediate plate is fixedly connected to a bottom surface of the upper roof by a plurality of connecting columns, the movable plate is located between the upper roof and the intermediate plate and is capable of moving up and down relative to the upper roof, the cutting edge is fixedly arranged on a bottom surface of the intermediate plate, and the pressing block is fixedly arranged on the bottom surface of the intermediate plate by the pressing block connecting rod; the plurality of springs are arranged between the movable plate and the upper roof, and the hold-down blocks are located below the intermediate plate and are fixedly arranged on a bottom surface of the movable plate by a plurality of connecting columns; the intermediate plate is provided with through holes for allowing the plurality of connecting columns on the bottom surface of the movable plate to pass through in positions corresponding to the connecting columns on the bottom surface of the movable plate; and the movable plate is provided with through holes for allowing the plurality of connecting columns on the bottom surface of the upper roof to pass through in positions corresponding to the connecting columns on the bottom surface of the upper roof.

8. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 7 , wherein the length of the pressing block connecting rod is adjustable.

9. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 7 , wherein the pressing block connecting rod is detachably connected with the pressing block and the intermediate plate.

10. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 7 , wherein both the pressing block and the first supporting block are detachable, so that the heights of the pressing block and the first supporting block can be conveniently adjusted to adapt to castings with different deformations.

11. The trimming die for the casting of the front steering knuckle in the double-wishbone suspension according to claim 1 , wherein both the pressing block and the first supporting block are detachable, so that the heights of the pressing block and the first supporting block can be conveniently adjusted to adapt to castings with different deformations.

Assignees

• Citic Dicastal Co Ltd

Inventors

• Xu Zuo
• Guo Haijun
• Li Dengyao
• Chen Zhi
• Zhang Yacong

Classifications

• B21D53/88

  other parts for vehicles, e.g. cowlings, mudguards · CPC title

• B21D53/883

  reflectors · CPC title

• B21D28/14 Primary

  Dies (ejecting or stripping-off devices arranged in punching machines or tools B21D45/00) · CPC title

• B22D31/002 Primary

  Cleaning, working on castings · CPC title

• B21D28/16

  Shoulder or burr prevention {, e.g. fine-blanking} · CPC title