CN1915548A

CN1915548A - Wedge horizontal roller type guid plate equipment

Info

Publication number: CN1915548A
Application number: CN 200610112650
Authority: CN
Inventors: 王宝雨; 胡正寰; 李玉京; 颜世公; 张巍
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 2006-08-28
Filing date: 2006-08-28
Publication date: 2007-02-21
Anticipated expiration: 2026-08-28
Also published as: CN100395045C

Abstract

A transverse wedged rolling roller type guide plate unit is composed of two working rollers, two supporting rollers, 4 bearings, and two guide plate bases. The axes of said working rollers and supporting rollers are parallel in a same plane perpendicular to the plane where the axes of rolling roller are positioned. Said working roller and relative supporting roller are close to each other tightly.

Description

A kind of Wedge horizontal roller type guid plate equipment

Technical field

The invention belongs to metal forming technology and equipment technology field, a kind of Wedge horizontal roller type guid plate equipment is provided especially, be applicable to the production of dual roll type and plate-type wedge rolling.

Technical background

Cross wedge rolling is a kind of axial workpiece New Forming Process, and its operation principle is: the board-like moulds of two band wedge shape moulds, move in the opposite direction, drive circular rolled piece reverse rotation, rolled piece under the effect of wedge shape pass, the various multidiameters of roll forming.Its main distortion is that radial compression extends axially.This technology is mainly used in the big axial workpiece of production lot, comprising: the axial workpiece on automobile, tractor, motorcycle, internal combustion engine, hardware ﹠ tools, building machinery, the electric armour clamp etc.Characteristics such as this technology has efficiently, material-saving, low consumption are the advanced production technologies of saving metal material and energy.

The effect of cross wedge rolling centering guide is to guarantee rolled piece at the process unit that limits the position stability rotation, is to guarantee the normally stable important device of carrying out of cross wedge rolling forming technology.At present the guide plate of cross wedge rolling is board-like, and board-like end face shape has rectangle, and with good grounds rolled piece geometry is made (referring to Fig. 1) conformal or the part conformal.

The shortcoming of the board-like guide plate of cross wedge rolling is at present:

1) owing to be sliding friction between rolled piece and the guide plate, the rolled piece surface is very easily scraped (drawing) and is hindered.For some product, as the aluminium alloy steps of manufacturing blanks, outer surface quality is had relatively high expectations, and mustn't have the surface to scrape (drawing) and hinder.Therefore present guide plate arrangement is difficult to satisfy the portioned product technological requirements such as aluminium alloy steps of manufacturing blanks that surface quality is had relatively high expectations;

2) be the sliding motion relation between rolled piece and the guide plate, the guide plate serious wear, the life-span is short, needs frequent the replacing or the finishing guide plate, influences ordinary production.

For the foregoing reasons, patent of the present invention has proposed to adopt the roller-type guide process unit that rolls.

Summary of the invention

The objective of the invention is to: a kind of roller-type guide device of rolling is provided, solves present guide plate and can not satisfy the have relatively high expectations problem of product technological requirement of surface quality, and solve problems such as guide plate serious wear, life-span be short.

The present invention includes: working roll 4,6, backing roll 3,7,

bearing block

10,11,12,13, and guide plate pedestal 21,23., structure is referring to Fig. 6, Fig. 7.In the middle of two rolls, the rolled piece both sides are equipped with working roll and backing roll, the axis of the axis of working roll 4,6 and backing roll 3,7 is parallel to each other and in same plane, this plane is vertical with plane, two roll axis places, and equates (referring to Fig. 2) with two roll axis distances.

Working roll 4 pastes with backing roll 7 tightly mutually with backing roll 3 and working roll 6, so working roll 4 is working roll radius and backing roll radius sum with the axial line distance of backing roll 3 and the axial line distance of working roll 6 and backing roll 7.

Working roll uses rolling bearing to be connected with bearing block as kinematic pair with backing roll, and perhaps working roll uses sliding bearing, backing roll to use rolling bearing to be connected with bearing block as kinematic pair.Adjacent working roll of homonymy and the as a whole structure of supporting roller bearing seat, as shown in Figure 5.

Bolt 26 fixedly mounts bearing block 10 and bearing block 12 by briquetting 25 with roller-type guide pedestal 21.Bolt 22 is with guide plate pedestal 21 and rolling-mill housing 20 fixed installations, as Fig. 6, shown in Figure 7.

Because the cross wedge rolling product belongs to longaxones parts more, guarantee the rigidity and the intensity of working roll and backing roll, its diameter is got big value as far as possible.But working roll and backing roll diameter can not surpass its maximum limit owing to be subjected to the restriction of locus.

Working roll generally is designed to the cylinder of same diameter.Maximum gauge when working roll is same diameter circle cylinder is calculated as follows:

r_{2} = \frac{R_{0} + r_{1}}{R_{0} - r_{1}} r_{1} + \frac{r_{0}^{2} - r_{1}^{2}}{2 (R_{0} - r_{1})}

In the formula: R ₀Be the roll outside diameter circle; r ₁Be workpiece diameter; r ₀Be blank diameter.

Simple for calculating, the working roll radius can be got rolled piece radius, r ₂=r ₁

Maximum gauge when the backing roll body of roll is cylinder is calculated as follows:

r_{3} = \frac{R_{0} + r_{1}}{R_{0} - r_{0} - 2 r_{2}} r_{1} + \frac{{(r_{0} + 2 r_{2})}^{2} - r_{1}^{2}}{2 (R_{0} - r_{0} - 2 r_{2})}

Structure when working roll and backing roll are the cylinder body of roll as shown in Figure 3.

Be to increase the rigidity of backing roll, increase the diameter of backing roll, backing roll body of roll profile can be designed to identical with the rolled piece profile or part identical, referring to Fig. 4.

For increasing the life-span of working roll, the body of roll of working roll can adopt quenching technical to improve the hardness of working roll.

The present invention compares with traditional fixing board-like guide plate has following advantage:

1) roller-type guide life-span height, process stabilizing;

2) owing to be rolling friction between rolled piece and the roller-type guide, the rolled piece surface quality is good, can satisfy the have relatively high expectations technological requirement of product of surface quality, for example aluminium alloy steps of manufacturing blanks etc.

Description of drawings

Fig. 1 is a cross wedge rolling traditional guide plate fundamental diagram, wherein, and bottom roll 1, topping roll 2, rolled piece, left guide plate 8, right guide plate 9.

Fig. 2 is a Wedge horizontal roller type guid plate fundamental diagram of the present invention, wherein, and left backing roll 3, left working roll 4, right working roll 6, right backing roll 7.

Structural representation when Fig. 3 is cylinder for the working roll body of roll and the backing roll body of roll, wherein, left shaft holder 10, left shaft holder 11, left shaft holder 12, left shaft holder 13.

Fig. 4 is the structural representation of backing roll body of roll profile when identical with the rolled piece profile.

Fig. 5 is a roller-type guide exemplary bearings holder structure schematic diagram of the present invention, wherein, and workroll bearing 18, supporting roller bearing 19.

Fig. 6 is a roller-type guide side view of the present invention, wherein, and briquetting 25, bolt 26.

Fig. 7 is a roller-type guide vertical view of the present invention, wherein, and milling train left frame 20, roller-type guide left side pedestal 21, bolt 22, the right pedestal 23 of roller-type guide, the right frame 24 of milling train.

The specific embodiment

The invention provides a kind of roller-type guide device, Fig. 5 is an example of bearing block of the present invention, and Fig. 6, Fig. 7 are a roller-type guide device example of the present invention.Rolled piece places between two moulds, two the guide plate working rolls, and the mould motion drives the blank rotation, and blank is under mould action, and radial compression extends axially, and blank is configured as rolled piece gradually.Rolled piece drives the revolution of guide plate working roll in the shaping turning course, rolled piece and mould and guide plate are all the rolling contact friction, can guarantee that the rolled piece surface is not scratched.For improving the life-span of roller-type guide, all need give water cooling at the working roll and the backing roll of operation of rolling centering guide.

Claims

1, a kind of Wedge horizontal roller type guid plate equipment is characterized in that, this device comprises: working roll (4,6), backing roll (3,7), bearing block (10,11,12,13) and guide plate pedestal (21,23); In the middle of two rolls, the rolled piece both sides are equipped with working roll and backing roll; The axis of the axis of working roll (4,6) and backing roll (3,7) is parallel to each other, and in same plane, this plane is vertical with plane, two roll axis places; Working roll (4) pastes with backing roll (7) tightly mutually with backing roll (3) and working roll (6), and working roll (4) is working roll radius and backing roll radius sum with the axial line distance of backing roll (3) and the axial line distance of working roll (6) and backing roll (7); Working roll uses rolling bearing to be connected with bearing block as kinematic pair with backing roll, and perhaps working roll uses sliding bearing, backing roll to use rolling bearing to be connected with bearing block as kinematic pair; Adjacent working roll of homonymy and the as a whole structure of supporting roller bearing seat; Bolt (26) fixedly mounts bearing block (10) and bearing block (12) by briquetting (25) with roller-type guide pedestal (21); Bolt (22) is with guide plate pedestal (21) and rolling-mill housing (20) fixed installation.

According to right 1 described device, it is characterized in that 2, the working roll and the backing roll body of roll are cylinder, perhaps the working roll body of roll is a cylinder, and backing roll body of roll profile is identical with the rolled piece profile or part is identical.

3, according to right 1 described device, it is characterized in that: working roll uses rolling bearing to be connected with bearing block as kinematic pair with backing roll, and perhaps working roll uses sliding bearing, backing roll to use rolling bearing to be connected with bearing block as kinematic pair.

4, according to right 1 described device, it is characterized in that: adjacent working roll of homonymy and the as a whole structure of supporting roller bearing seat.