Method for drilling a steering knuckle casting

Patent metadata

Field	Value
Publication number	US-10196087-B2
Application number	US-201614990217-A
Country	US
Kind code	B2
Filing date	Jan 7, 2016
Priority date	Jan 9, 2015
Publication date	Feb 5, 2019
Grant date	Feb 5, 2019

Abstract

The present invention relates to a method for drilling in steering knuckles, which comprises locating a casted steering knuckle onto a drilling fixture for a steering knuckle, and aligning the center lines of the maching points of the left and right pieces of the steering knuckle. The method provided by the present invention can meet the requirement for simultaneously drilling the left and right symmetrical pieces of the steering knuckle when in use, and in the meantime, has outstanding advantages of advance technology, high positioning precision, firmness in positioning, high machining efficiency and the like.

First claim

The invention claimed is:

1. A method for drilling a steering knuckle casting, comprising:
a step of locating a casted steering knuckle onto a drilling fixture for a steering knuckle, and aligning the center lines of the machining points of the left and right pieces of the steering knuckle;
wherein the fixture comprises a first steering knuckle fixture, a second steering knuckle fixture and an insert plate supporting device;
wherein the first steering knuckle fixture and the second steering knuckle fixture are configured to make center lines of machining drilling points of a left knuckle and a right knuckle of the steering knuckle in coaxial arrangement;
wherein the insert supporting device comprises fixable insert plates, which support the machining drilling points of the left knuckle and the right knuckle of the steering knuckle; and
wherein an included angle between a crossed line between an inclined plate of the first steering knuckle fixture and a plane in which a baseplate is located and a crossed line between an inclined plate of the second steering knuckle fixture and the plane in which the baseplate is located is adjustable.

2. The method according to claim 1 , wherein the first steering knuckle fixture and the second steering knuckle fixture comprise pressing plates and floating pins, both of which are arranged on inclined plates.

3. The method according to claim 1 , wherein the insert plate supporting device comprises a drilling sleeve plate and two fixable inserts plates fixed through locking spanners.

4. The method according to claim 1 , wherein an included angle between the inclined plate of each of the first steering knuckle fixture and the second steering knuckle fixture and a baseplate of the fixture is 30 to 75 degrees.

5. The method according to claim 1 , wherein the included angle is 60 to 120 degrees.

6. The method according to claim 1 , wherein the first steering knuckle fixture is comprised of a baseplate, ribbed plates of the first steering knuckle, an inclined plate of the first steering knuckle, a mandrel of the first steering knuckle, a big pressing plate, a small pressing plate, a compression screw and a floating pin of the first steering knuckle; the inclined plate of the first steering knuckle is fixed on the baseplate, and two ribbed plates of the first steering knuckle are fixed between the inclined plate of the first steering knuckle and the baseplate; the mandrel of the first steering knuckle and the floating pin of the first steering knuckle are mounted above the inclined plate of the first steering knuckle, and the mandrel of the first steering knuckle is matched with a center hole and a flange face of a left piece of the steering knuckle to realize radial positioning for the left piece; the floating pin of the first steering knuckle corresponds to a positioning hole in the left piece to realize circumferential positioning for the left piece; and the big pressing plate and the small pressing plate fix the left piece on the first inclined plate of the first steering knuckle through the compression screw.

7. The method according to claim 1 , wherein the second steering knuckle fixture is comprised of a big pressing plate, a small pressing plate, a compression screws, ribbed plates of the second steering knuckle, a standing plate, an inclined plate of the second steering knuckle, a mandrel of the second steering knuckle, and a floating pin of the second steering knuckle; the inclined plate of the second steering knuckle is fixed on the baseplate through the standing plate, and two ribbed plates of the second steering knuckle are fixed between the inclined plate of the second steering knuckle and the baseplate; both the mandrel of the second steering knuckle and the floating pin of the second steering knuckle are mounted above the inclined plate of the second steering knuckle, and the mandrel of the second steering knuckle is matched with a center hole and a flange face of a right piece of the steering knuckle to realize radial positioning for a right piece of the steering knuckle; the floating pin of the second steering knuckle corresponds to a positioning hole in the right piece to realize circumferential positioning for the left piece; and the big pressing plate and the small pressing plate fix the right piece on the inclined plate of the second steering knuckle through the compression screw.

8. The method according to claim 1 , wherein the insert plate supporting device is comprised of a first insert plate of the first steering knuckle, a second insert plate of the second steering knuckle, a drilling sleeve plate, a supporting column, a first locking spanner of the first steering knuckle, a second locking spanner of the second steering knuckle and springs; the supporting column on which the drilling sleeve plate is mounted is fixed on the baseplate, the first insert plate of the first steering knuckle and the second insert plate of the second steering knuckle, with conicity at front ends, are matched with four square holes in the supporting column through two square column at rear ends respectively, and the four springs are mounted on the square columns at the back of the first insert plates of the first steering knuckle and second insert plate of the second steering knuckle to realize the contraction thereof at a natural state; and the first locking spanner of the first steering knuckle and the second locking spanner of the second steering knuckle are in threaded connection with the supporting column to realize the support of the first insert plate of the first steering knuckle and the second insert plate of the second steering knuckle to two workpiece holes.

9. The method according to claim 6 , wherein the diameter of a middle hole in the big pressing plate is greater than that of the head of the compression screw.

10. The method according to claim 6 , wherein the small pressing plate is of an open type.

11. The method according to claim 5 , wherein the method further comprises the following steps:
fixing the left piece of the steering knuckle on the inclined plate of the first steering knuckle through the mandrel of the first steering knuckle, the floating pin of the first steering knuckle, the big pressing plate, the small pressing plate, and the compression screw;
fixing the right piece of the steering knuckle on the inclined plate of the second steering knuckle through the mandrel of the second steering knuckle, the floating pin of the second steering knuckle, the big pressing plate, the small pressing plate and the compression screw; adjusting to allow the center lines of four machining holes in the fixed left and right pieces of the steering knuckle to be coaxial; and supporting the two symmetrical pieces of the steering knuckle by the insert plate of the first steering knuckle and the insert plate of the second steering knuckle via the locking spanner of the first steering knuckle and the locking spanner of the second steering knuckle.

Assignees

• Citic Dicastal Co Ltd
• Citic Dicastal Co Ltd

Inventors

• Xue Bowen
• Zhang Yacong
• Guo Jiandong
• Wang Yongning
• Zhu Zhihua
• Li Changhai

Classifications

• B62D7/18 Primary

  Steering knuckles; King pins · CPC title

• B23B35/00

  Methods for boring or drilling, or for working essentially requiring the use of boring or drilling machines; Use of auxiliary equipment in connection with such methods · CPC title

• B23B41/00

  Boring or drilling machines or devices specially adapted for particular work {(surgical drilling machines A61B17/16)}; Accessories specially adapted therefor · CPC title