CN103658188A

CN103658188A - Roller of cross wedge rolling mill

Info

Publication number: CN103658188A
Application number: CN201410000958.0A
Authority: CN
Inventors: 余永兴; 孙爱生; 王砚
Original assignee: ANQING ZHENFA AUTOMOBILE FORGING Co Ltd
Current assignee: ANQING ZHENFA AUTOMOBILE FORGING Co Ltd
Priority date: 2014-01-03
Filing date: 2014-01-03
Publication date: 2014-03-26

Abstract

The invention discloses a roller of a cross wedge rolling mill. The roller of the cross wedge rolling mill comprises a roller body and a center shaft. Four discharge holes are respectively formed in two end faces of the roller body; joints of the two end faces of the roller body and the center shaft are welded through gas shielding; key grooves are respectively formed in both ends of the center shaft; the number of the discharge holes is four; the discharge holes are 100mm in diameter. The roller of the cross wedge rolling mill disclosed by the invention has the characteristics of being simple in structure, free of radial displacement and high in working efficiency, and can be widely used for mass production of axis parts, such as the axis parts of automobiles, tractors, motorcycles, engines and the like.

Description

A kind of roll of cross wedge rolling machine

Technical field

The present invention relates to a kind of parts of cross wedge rolling machine, be specifically related to a kind of roll of cross wedge rolling machine.

Background technology

Cross wedge rolling machine is compared with general Forging Technology, produce particularly axial workpiece, production efficiency has improved 3-7 doubly than old technology, workpiece measurement is accurate, and stock utilization is high by 20%, high 5-10 times of die life, without impacting little noise, the advantages such as workman's working condition is good, are more and more extensively suitable for the production in enormous quantities of axial workpiece, as the axial workpiece of automobile, tractor, motorcycle, engine etc.At present, the hole of center, the roll body two ends φ 150mm of cross wedge rolling machine is cast steel through hole, the axle coordinating with φ 150mm hole is axis, and axle coordinated for moving with coordinating of hole, the joint of hole end surface and axle (45#), for common welding rod is welded into, through continuous rolling, or the generation impulsive force that sometimes gets stuck, making weld seam sealing-off, roll crown has produced and has moved radially with respect to axle center.Therefore, growth along with the cross wedge rolling machine working time, after between its roll and central shaft, phase place is adjusted, rolling a period of time, just occurred between roll and central shaft the leading or hysteresis of phase place, the product quality that Rolling Production goes out is very unstable, occurs the substandard products such as bending, dimension overproof, cost strengthens, and has a strong impact on enterprise and produces and economic benefit.

Summary of the invention

The object of the present invention is to provide a kind of simple in structure, roll of non-displacement, cross wedge rolling machine that operating efficiency is high radially.

For achieving the above object, the roll of a kind of cross wedge rolling machine of the present invention, comprises roll body and central shaft, in described roll body both ends of the surface, is provided with unloading hole, and the joint of roll body both ends of the surface and central shaft is protected welding by gas; The two ends of described central shaft are provided with keyway.

Described unloading hole is provided with four, and diameter is 100mm.

Adopt after technique scheme, by unloading hole being set in the roll body both ends of the surface at cross wedge rolling machine, the two ends of central shaft arrange keyway, this structure makes central shaft by original moving cooperation, change hole with roll endoporus into, flat key interference fits on keyway and central shaft, thoroughly eliminated roll body radially with the possibility that is radially subjected to displacement of central shaft, guaranteed the assembling of each parts of cross wedge rolling machine and made precision, cross wedge rolling machine there will not be offset phenomena in operation process between roll, make running more steady, shut out product quality high, production cost reduces, and reduce the labour intensity of maintenance of equipment and die adjustment work, increase Business Economic Benefit, roll body end face φ 150mm hole and central shaft (φ 150 * 600mm) joint is used gas to protect welding, guarantees that weldment is more firm.

Further, described unloading hole is provided with four, and diameter is 100mm, improves interference fits effect.

Accompanying drawing explanation

Fig. 1 is the roll structure schematic diagram of a kind of cross wedge rolling machine of the present invention;

Fig. 2 is that Fig. 1 is along A-A to cutaway view;

Fig. 3 is left view of the present invention.

The specific embodiment

Below in conjunction with accompanying drawing, the roll tool of a kind of cross wedge rolling machine of the present invention is described further;

From Fig. 1, Fig. 2, Fig. 3, the roll of a kind of cross wedge rolling machine of the present invention, comprises roll body 1 and central shaft 2, in described roll body 1 both ends of the surface, is provided with unloading hole 11, and the joint of roll body 1 both ends of the surface and central shaft 2 is protected welding by gas; The two ends of described central shaft 2 are provided with keyway 21.

The technology of the present embodiment is mainly solved by the following technical programs: in roll body 1 both ends of the surface, be provided with unloading hole 11, the joint of roll body 1 both ends of the surface and main shaft 2 is protected welding by gas, the two ends of central shaft 2 are provided with keyway 21, this structure makes central shaft 2 by original moving cooperation, change hole with the endoporus of roll body 1 into, flat key interference fits on keyway 21 and central shaft 2, thoroughly eliminated roll body 1 radially with the possibility that is radially subjected to displacement of central shaft 2, guaranteed the assembling of each parts of cross wedge rolling machine and made precision, cross wedge rolling machine there will not be offset phenomena in operation process between roll, make running more steady, shut out product quality high, production cost reduces, and reduce the labour intensity of maintenance of equipment and die adjustment work, increase Business Economic Benefit.

When the present invention uses in assembling, roll body 1 both ends of the surface respectively arrange the unloading hole 11 that four diameters are 100mm, and the center-hole diameter of central shaft 2 is 150mm, and its two ends are provided with key 21; From structure, the keyway 21 during work on central shaft 2 is interference fits with the endoporus of roll body 1 like this, avoids producing roll body 1 and central shaft 2 radial phase in advance or lags behind; The endoporus of roll body 1 is that diameter is 150mm hole and central principal axis 2(φ 150 * 600mm) joint use gas guarantor welding, at first preheating weldment of when welding, during welding, support staff knocks on limit weldment for evenly discharging the internal stress producing when weldment welds, under cross wedge rolling machine External Force Acting (duty) like this, weld seam there will not be seminess and higher firm; Meanwhile, improve the service life of cross wedge rolling machine.

Claims

1. the roll of a cross wedge rolling machine, comprise roll body (1) and central shaft (2), it is characterized in that: in described roll body (1) both ends of the surface, be provided with unloading hole (11), the joint of roll body (1) both ends of the surface and central shaft (2) is protected welding by gas; The two ends of described central shaft (2) are provided with keyway (21).

2. the roll of cross wedge rolling machine according to claim 1, it is characterized in that: described unloading hole (11) is provided with four, and diameter is 100mm.