CN203803913U - Four-upright-column housing-free bar sizing reducing machine with short-barrel rollers - Google Patents

Abstract

The utility model provides a four-upright-column housing-free bar sizing reducing machine with short-barrel.rollers. Thefour-upright-column housing-free bar sizing reducing machine consists of an axial adjusting device, upright columns, a pressing device, a connecting rod, a supporting seat, the short-barrel rollers, bearing seats, roll shafts, taper sleeves, handles and roll collars. The four-upright-column housing-free bar sizing reducing machine is characterized by further comprising the short-barrel rollers, the rollers are of short rollers with ratio of barrel length and diameter </=0.5, and the short-barrel rollers are of a roller combination; a frame of the sizing reducing machine is of a four-upright-column housing-free structure; the pressing device is connected with the bearing seats respectively through the upright columns which are fixed on the bearing seats, the short-barrel rollers are respectively arranged in the bearing seats through bearings, the axial adjusting device is connected with the bearing seats, and the connecting rod is connected with the bearing seats which are fixed on a base. The four-upright-column housing-free bar sizing reducing machine has the advantages that a four-upright-column housing-free stiff mill is combined with the short-barrel rollers to improve integral rigidity of the rolling mill and reduce jumping value of the roller under same roll force, so that dimensional accuracy of rolled pieces is improved; and further combined with low-temperature controlled-rolling technology to improve structure property of the rolled pieces.

Description

A kind of short roller body four columns are without memorial archway bar reducing sizing mill

Technical field:

The utility model relates to Rolling-mill Auxiliary Facilities technical field, particularly relates to a kind of short roller body four columns without memorial archway bar reducing sizing mill.

Background technology:

Metal bar is common metallurgic product, its rolling mill practice generally comprise roughing, in roll and finish rolling three phases, subtract fixed diameter process and be generally used for the last rolling of finish rolling, subtract the rigidity that sizing is higher and can guarantee the product that production dimensional accuracy is higher.At present, the short-stress path bar mill that domestic design is manufactured, its barrel length is longer, has limited the raising of mill stiffness, thereby is not suitable for subtracting fixed diameter process; The three-roller type of design abroad and four-roller type bar reducing sizing mill, how due to complicated structures such as transmission systems, thereby make its manufacture and maintenance cost higher.

Summary of the invention:

The purpose of this utility model is to overcome the deficiency that prior art exists, invent a kind of simple in structure, maintenance cost is low, milling train integral rigidity is high, the spring amount of roll is little in the operation of rolling, bar product size precision is high, can combine with low temperature rolling and short roller body four columns of structure property that can improve product without memorial archway bar reducing sizing mill.

Technical solution of the present utility model is to provide a kind of short roller body four columns without memorial archway bar reducing sizing mill, axial adjusting device, column, screwdown gear, connecting rod, supporting seat, bearing block, consists of; It is characterized in that: also comprise short roller body roll, short roller body roll is assembly roller, roll shaft, tapered sleeve, handle, collars, consists of; Roll shaft outside cover has tapered sleeve, is taper fit between tapered sleeve and roll shaft, and its taper angle designs according to self-lock mechanism, and its value is less than minimum Self-locking angle; Tapered sleeve outer end is provided with screw thread, between tapered sleeve and collars for being connected; Its reducing sizing mill frame is that four columns are without memorial archway structure; Screwdown gear is connected with roll chock by column, column is fixed on supporting base, and short roller body roll is installed in bearing block by bearing, and axial adjusting device is connected with bearing block, connecting rod is connected with supporting base, and supporting base is fixed on the sole plate below milling train; Be further characterized in that: the material of roll shaft is alloy forged steel; The material of collars is carbide alloy; During assembly roller dismounting, tapered sleeve outer end coordinates a handle being threaded with it; Barrel length and the diameter ratio of short roller body roll be≤0.5 short roller, and roll is short roller body.

The beneficial effects of the utility model are: four columns combine with short roller body without memorial archway stiff mill, can improve milling train integral rigidity, reduce the bouncing value of identical roll-force bottom roll, thereby improve workpiece measurement precision; The milling train of high rigidity can carry out heavy reduction rolling, by adjusting the drafts of reducing sizing mill, can produce the product of different size specification; Improvement of manufacturing line for adopting without memorial archway stiff mill, can utilize original base, original transmission system and original roll-changing equipment, thereby saves improvement cost, shortens the transformation duration.Bar reducing sizing mill in this patent, its manufacturing cost and conventional mill are suitable, and shorter body of roll structure combines with four column short stress path rolling mills, makes rolling-mill housing and roll in the operation of rolling have less deflection, thereby reduces the bouncing value of roll gap.Its application can improve workpiece measurement precision, can, by the dimensional discrepancy of Ф 14～60mm round steel by ± be increased to ± 0.1mm of 0.25mm～± 0.80mm, combine and can also improve rolled piece structure property with low temperature controlled rolling.

Accompanying drawing explanation:

Fig. 1 is the front view of the utility model embodiment;

Fig. 2 is the left view of Fig. 1.

Fig. 3 is the structure chart of the short-and-medium body of roll roll 6 of the utility model embodiment;

In accompanying drawing: 1. axial adjusting device; 2. column; 3. screwdown gear; 4. connecting rod; 5. supporting seat; 6. short roller body roll; 7. bearing block; 8. roll shaft; 9. tapered sleeve; 10. handle; 11. collars.

The specific embodiment:

Below in conjunction with accompanying drawing, the utility model embodiment is described in further detail: Fig. 1～Fig. 2 be a kind of short roller body four columns without structural front view and the left view of memorial archway bar reducing sizing mill, Fig. 3 is the structure chart of the short-and-medium body of roll roll 6 of the utility model embodiment; This reducing sizing mill frame be four columns without memorial archway structure, roll 6 is short roller body; This reducing sizing mill is comprised of axial adjusting device 1, column 2, screwdown gear 3, connecting rod 4, supporting seat 5, short roller body roll 6, bearing block 7, roll shaft 8, tapered sleeve 9, handle 10, collars 11; The material of roll shaft 8 is alloy forged steel; The material of collars 11 is carbide alloy; During assembly roller dismounting, tapered sleeve 9 outer ends coordinate a handle being threaded with it 10; Barrel length and the diameter ratio of short roller body roll 6 be≤0.5 short roller, and roll shaft 8 outsides covers have tapered sleeve 9, between tapered sleeve 9 and roll shaft 8, are taper fit, and its taper angle designs according to self-lock mechanism, and its value is less than minimum Self-locking angle; Tapered sleeve 9 outer ends are provided with screw thread, between tapered sleeve 9 and collars 11 for being connected; Screwdown gear 3 is connected with roll chock 7 by column 2, column 2 is fixed on supporting base 5, and short roller body roll 6 is installed in bearing block 7 by bearing, and axial adjusting device 1 is connected with bearing block 7, connecting rod 4 connects supporting base 5, and supporting base 5 is fixed on milling train sole plate.This reducing sizing mill is for the production line of milling round steel, mainly by roughing unit, intermediate mill, smart unit, reducing sizing mill group, finishing unit and other auxiliary equipment, formed, wherein, reducing sizing mill group is comprised of reducing mill and sizing mill, its manufacturing cost and conventional mill are suitable, shorter body of roll structure combines with four column short stress path rolling mills, makes rolling-mill housing and roll in the operation of rolling have less deflection, thereby reduces the bouncing value of roll gap.Its application can make reach ± 0.1mm of the dimensional accuracy of round steel, combines and can also improve rolled piece structure property with low temperature controlled rolling.Principle of the present utility model is: when milling train moves, the bouncing value of the stressed rear roll gap of milling train is subject to the impact of frame and roll two parts deformational overprint very large, so the technical bottleneck of bar reducing sizing mill is how to improve the rigidity of its milling train, and reduce the spring of roll gap in the operation of rolling; This programme is from improving housing rigidity and improving two aspects of roll rigidity and carry out the raising of mill stiffness; Bar reducing sizing mill adopts the rack construction of four column non-stand rolling mills; Four column non-stand rolling mills have been cancelled length larger stressed member frame in the conventional mill that spring amount is larger, and two very large bearing blocks of rigidity are fixed together with two columns in every side of roll, greatly shortened the length of milling train stress line, made milling train there is larger rigidity.This bar reducing sizing mill adopts shorter body of roll structure, and its barrel length and diameter ratio≤0.5, be simplified to simply supported beam by roll, like this, when roll-force and barrel diameter are constant, the deflection value of roll reduces with barrel length and reduces, so short roller body roll can significantly improve roll rigidity.This bar reducing sizing mill combines short roller body roll with four column non-stand rolling mills, improved milling train integral rigidity, reduced the bouncing value of roll gap in the operation of rolling, thereby greatly improved the dimensional accuracy of round steel, can be by the dimensional discrepancy of Ф 14～60mm round steel by ± be increased to ± 0.1mm of 0.25mm～± 0.80mm.

Claims (4)

1. short roller body four columns, without a memorial archway bar reducing sizing mill, are comprised of axial adjusting device (1), column (2), screwdown gear (3), connecting rod (4), supporting seat (5), bearing block (7); It is characterized in that: also comprise short roller body roll (6), short roller body roll (6) is assembly roller, by roll shaft (8), tapered sleeve (9), handle (10), collars (11), formed; Roll shaft (8) outside cover has tapered sleeve (9), between tapered sleeve (9) and roll shaft (8), is taper fit, and its taper angle designs according to self-lock mechanism, and its value is less than minimum Self-locking angle; Tapered sleeve (9) outer end is provided with screw thread, between tapered sleeve (9) and collars (11) for being connected; Its reducing sizing mill frame is that four columns are without memorial archway structure; Screwdown gear (3) is connected with roll chock (7) by column (2), column (2) is fixed on supporting base (5), short roller body roll (6) is installed in bearing block (7) by bearing, axial adjusting device (1) is connected with bearing block (7), connecting rod (4) is connected with supporting base (5), and supporting base (5) is fixed on the sole plate below milling train.

2. a kind of short roller body four columns as claimed in claim 1, without memorial archway bar reducing sizing mill, is characterized in that: the material of roll shaft (8) is alloy forged steel; The material of collars (11) is carbide alloy.

3. a kind of short roller body four columns as claimed in claim 1, without memorial archway bar reducing sizing mill, is characterized in that: during assembly roller dismounting, tapered sleeve outer end coordinates a handle being threaded with it (10).

4. a kind of short roller body four columns as claimed in claim 1, without memorial archway bar reducing sizing mill, is characterized in that: barrel length and the diameter ratio of short roller body roll (6) be≤and 0.5 short roller, roll is short roller body.