CN102189142A - Universal joint fork processing process - Google Patents

Abstract

The invention discloses a universal joint fork processing process. The process comprises the following steps: cutting a round steel bar with diameter of 28 mm into sections with the length of 42mm, and blanking; performing the first annealing treatment; performing the first saponification treatment; performing the first cold extrusion processing; performing the second annealing treatment; performing the second saponification treatment; performing the second cold extrusion processing; cutting off arc-shaped redundant materials of two lugs; and machining and forming the finished product. By the universal joint fork processing process disclosed by the invention, the structural strength and surface glossiness of a vehicle universal joint fork can be improved, and the process has the characteristics of reasonable process steps, material saving, low carbon and environment friendliness and low manufacturing cost.

Description

A kind of processing technology of universal-joint fork

Technical field

The present invention relates to a kind of processing technology of universal-joint fork, belong to auto parts and components product manufacturing technology field.

Background technology

The universal-joint fork that at present obtains widely applying in the directional control system of vehicle, mainly formed by two kinds of mechanical processing technique manufacturings: a kind of is warm and hot forging technology, and another kind is a casting technique.These two kinds of technologies all exist bigger defective.

The shortcoming of warm and hot forging technology is: the one, and raw materials consumption is bigger in the manufacture process; The 2nd, the electric power energy consumption is big, and the forging size is inaccurate; The 3rd, the universal-joint fork surface after being shaped is more coarse; The 4th, be difficult for machined, the accuracy of manufacture is poor.

The shortcoming of casting technique is: the one, and electric power energy consumption is bigger; The 2nd, not environmental protection, environmental pollution is bigger; The 3rd, the universal-joint fork intensity that shapes is low, easily fracture; The 4th, production cost is higher.

Summary of the invention

The invention provides a kind of processing technology of a kind of universal-joint fork of novelty, adopt the cold extrusion processing technics technology, be implemented in economical with materials in the vehicle universal-joint fork manufacture course of products, improve the product mechanical strength, low-carbon environment-friendly, the purpose that reduces production costs.

The technical solution used in the present invention is:

A kind of processing technology of universal-joint fork, the operation of the processing technology of described universal-joint fork is:

(1), be that 28mm round steel bar cuts off blanking with diameter, shearing length is 42mm;

(2), annealing in process for the first time;

(3), saponification is for the first time handled;

(4), the processing of cold extrusion for the first time;

(5), annealing in process for the second time;

(6), saponification is for the second time handled;

(7), the processing of cold extrusion for the second time;

(8), the circular arc excess stock of excision two ears;

(9), machined and form finished product.

Beneficial effect of the present invention is:

Owing to adopted the processing technology of a kind of universal-joint fork of the present invention, improved the structural strength of vehicle universal-joint fork, also improved the surface smoothness of vehicle universal-joint fork, have technology rationally, economical with materials, the high and low carbocyclic ring of product mechanical strength protect, the characteristics of low cost of manufacture.

The specific embodiment

A kind of processing technology of universal-joint fork, the operation of the processing technology of described universal-joint fork is: with diameter is that 28mm round steel bar cuts off blanking, shearing length is 42mm---then under the round steel bar carry out annealing in process for the first time---saponification is for the first time handled, and---------saponification is for the second time handled, and---machining carried out in the processing of cold extrusion for the second time---excising the excess stock on two ears then---to the processing of cold extrusion for the first time at last, and forms finished product then to carry out annealing in process for the second time.

Basic functional principle:

Universal-joint fork is installed on the steering wheel dwang of vehicle, and is connected, so just can maneuver vehicle use with associated components.

Because what adopt is the product that cold extrusion processing technics is shaped, so compare, adopt the universal-joint fork of cold extrusion processing technics can keep high strength with Forging Technology, be easy to machining shaping product again, and process time is short, material, energy resource consumption are all lacked.

Compare with casting technique, adopt the universal-joint fork high strength of cold extrusion processing technics significantly to improve, eliminated environmental pollution, the production time significantly shortens, and has reduced production cost and energy resource consumption.

Claims (1)

1. the processing technology of a universal-joint fork, it is characterized in that: the operation of the processing technology of described universal-joint fork is:

(1), be that 28mm round steel bar cuts off blanking with diameter, shearing length is 42mm;

(2), annealing in process for the first time;

(3), saponification is for the first time handled;

(4), the processing of cold extrusion for the first time;

(5), annealing in process for the second time;

(6), saponification is for the second time handled;

(7), the processing of cold extrusion for the second time;

(8), the circular arc excess stock of excision two ears;

(9), machined and form finished product.