Steering knuckle casting hydraulic fixture

Abstract

A steering knuckle casting hydraulic fixture includes a positioning mandrel, a pair of flat keys fixed on a bottom surface of a fixture body, a linear bearing and an elastic taper pin match a steering knuckle casting, an angle positioning seat, a straight pin, an angle positioning nail, an angle clamping nail, a nut, a spring, a spring seat and a linear cylinder are used to restrict the rotational freedom of the casting around the Z axis, hydraulic corner cylinders, pressure plates, and support nails are used to clamp the casting, and three guide blocks are used to guide the installation of the steering knuckle casting.

Claims

1. A steering knuckle casting hydraulic fixture, comprising: a fixture body, a positioning mandrel, a first flat key, a second flat key, a first hydraulic corner cylinder, a first pressure plate, a first support nail, a second hydraulic corner cylinder, a second pressure plate, a second support nail, a third hydraulic corner cylinder, a third pressure plate, a third support nail, a linear bearing, an elastic taper pin, an angle positioning seat, a straight pin, an angle positioning nail, an angle clamping nail, a nut, a spring, a spring seat, a linear cylinder, a first guide block, a second guide block, a third guide block and a seal plug; wherein an oil inlet path, an oil outlet path and a gas path are provided inside the fixture body, and an exterior of the fixture body is provided with a bottom surface, a first plane, a second plane, a third plane and a fourth plane, wherein the first plane, the second plane and the third plane are parallel to each other and perpendicular to the bottom surface, and the fourth plane is parallel to the bottom surface, the positioning mandrel, the first flat key and the second flat key are all fixed on the bottom surface of the fixture body to connect a machining equipment, the first hydraulic corner cylinder is fixed on the first plane of the fixture body, the first pressure plate is fixed on an output shaft of the first hydraulic corner cylinder, and the first support nail is fixed on the second plane of the fixture body; the second hydraulic corner cylinder is fixed on the first plane of the fixture body, the second pressure plate is fixed on an output shaft of the second hydraulic corner cylinder, and the second support nail is fixed on the second plane of the fixture body; the third hydraulic corner cylinder is fixed on the third plane of the fixture body, the third pressure plate is fixed on an output shaft of the third hydraulic corner cylinder, and the third support nail is fixed on the third plane of the fixture body; and wherein the linear bearing is fixed on the second plane of the fixture body and connected with the elastic taper pin through moving pairs, a tapered surface of the elastic taper pin matches a steering knuckle casting to restrict a freedom of movement of the casting in X, Y and Z directions and a freedom of rotation around X and Y axes, the angle positioning seat is positioned by the straight pin and fixed on the third plane of the fixture body, the angle positioning nail is fixed on the angle positioning seat, the linear cylinder is fixed on the fourth plane of the fixture body, is connected with the angle clamping nail through the spring seat, the spring and the nut and cooperates with the angle positioning nail to restrict a rotational freedom of the casting around a Z axis, the first guide block, the second guide block and the third guide block are all fixed on the second plane of the fixture body to guide an installation of the steering knuckle casting, and the seal plug plugs a process hole of the fixture body.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) The present invention will be further illustrated below in conjunction with the accompanying drawings and specific embodiments.

(2) FIG. 1 is a front view of a steering knuckle casting hydraulic fixture according to the present invention; and

(3) FIG. 2 is a top view of the steering knuckle casting hydraulic fixture according to the present invention.

(4) In which, 1flat key a, 2fixture body, 3positioning mandrel, 4flat key b, 5hydraulic corner cylinder a, 6pressure plate a, 7support nail a, 8guide block a, 9linear bearing, 10elastic taper pin, 11guide block b, 12support nail b, 13hydraulic corner cylinder b, 14pressure plate b, 15guide block c, 16straight pin, 17angle positioning seat, 18support nail c, 19hydraulic corner cylinder c, 20pressure plate c, 21angle positioning nail, 22angle clamping nail, 23spring, 24nut, 25spring seat, 26linear cylinder, 27seal plug, 28gas path, 29oil inlet path, and 30oil outlet path.

DETAILED DESCRIPTION OF EMBODIMENTS

(5) As shown in FIGS. 1 and 2, a steering knuckle casting hydraulic fixture includes a fixture body 2, a positioning mandrel 3, a flat key a 1, a flat key b 4, a hydraulic corner cylinder a 5, a pressure plate a 6, a support nail a 7, a hydraulic corner cylinder b 13, a pressure plate b 14, a support nail b 12, a hydraulic corner cylinder c 19, a pressure plate c 20, a support nail c 18, a linear bearing 9, an elastic taper pin 10, a straight pin 16, an angle positioning seat 17, an angle positioning nail 21, an angle clamping nail 22, a nut 24, a spring 23, a spring seat 25, a linear cylinder 26, a guide block a 8, a guide block b 11, a guide block c 15 and a seal plug 27.

(6) An oil inlet path 29, an oil outlet path 30 and a gas path 28 are provided inside the fixture body 2, and the exterior of the fixture body 2 is provided with a bottom surface, a plane A, a plane B, a plane C and a plane D, wherein the plane A, the plane B and the plane C are parallel to each other and perpendicular to the bottom surface, and the plane D is parallel to the bottom surface. The positioning mandrel 3, the flat key a 1 and the flat key b 4 are all fixed on the bottom surface of the fixture body to connect machining equipment. The hydraulic corner cylinder a 5 is fixed on the plane A of the fixture body 2, the pressure plate a 6 is fixed on an output shaft of the hydraulic corner cylinder a 5, and the support nail a 7 is fixed on the plane B of the fixture body 2. The hydraulic corner cylinder b 13 is fixed on the plane A of the fixture body 2, the pressure plate b 14 is fixed on an output shaft of the hydraulic corner cylinder b 13, and the support nail b 12 is fixed on the plane B of the fixture body 2. The hydraulic corner cylinder c 19 is fixed on the plane C of the fixture body 2, the pressure plate c 20 is fixed on an output shaft of the hydraulic corner cylinder c 19, and the support nail c 18 is fixed on the plane C of the fixture body 2.

(7) The linear bearing 9 is fixed on the plane B of the fixture body 2 and connected with the elastic taper pin 10 through a moving pair. The tapered surface of the elastic taper pin 10 matches a steering knuckle casting to restrict the freedom of movement of the casting in the X, Y and Z directions and the freedom of rotation around the X and Y axes. The angle positioning seat 17 is positioned by the straight pin 16 and fixed on the plane C of the fixture body 2. The angle positioning nail 21 is fixed on the angle positioning seat 17, and the linear cylinder 26 is fixed on the plane D of the fixture body 2, is connected with the angle clamping nail 22 through the spring seat 25, the spring 23 and the nut 24, and cooperates with the angle positioning nail 21 to restrict the rotational freedom of the casting around the Z axis. The guide block a 8, the guide block b 11 and the guide block c 15 are all fixed on the plane B of the fixture body 2 to guide the installation of the steering knuckle casting. The seal plug 27 is used to plug a process hole of the fixture body 2.