CN102601695B

CN102601695B - Dynamic simulation grinding fixture for controllable crowned roller

Info

Publication number: CN102601695B
Application number: CN201210105656.0A
Authority: CN
Inventors: 潘荣敦; 张晓磊; 任卫华; 彭宜纯; 别志兵
Original assignee: SHASHI LIGHT INDUSTRY MACHINERY Co Ltd
Current assignee: SHASHI LIGHT INDUSTRY MACHINERY Co Ltd
Priority date: 2012-04-12
Filing date: 2012-04-12
Publication date: 2014-04-16
Anticipated expiration: 2032-04-12
Also published as: CN102601695A

Abstract

The invention relates to a dynamic simulation grinding fixture for a controllable crowned roller, which belongs to the technical field of accessories of papermaking machinery and comprises a roll shaft positioning device, an adjustable tensioning support, a synchronous belt, a synchronous pulley, a variable-frequency speed reduction motor and a variable-frequency control device. The roll shaft positioning device comprises a pressure ring, a mounting plate, an adjusting screw and a positioning screw and is mounted and positioned on a mandrel through the pressure ring. The adjustable tensioning support comprises a fixed bottom plate, a support and a screw rod, the support and the screw rod are mounted on the fixed bottom plate, and the variable-frequency speed reduction motor is mounted on the support. The roll shaft positioning device is used for positioning and assisting in transmission variable-frequency control, demounting of the controllable mandrel of a crowned roller is not needed, operation is simple and convenient, and labor intensity is relieved, grinding can be selectively operated according to different roller diameters and abrasion conditions, and the dynamic simulation grinding fixture is wide in application range. In addition, the problems that using existing normal rollers for grinding easily causes imbalance of the roll shaft, damage of roller inner bores or seal parts, prolongation of grinding cycle and increase of manufacturing cost are solved.

Description

A kind of crown controlled roll dynamic analog grinding fixture

Technical field

The present invention relates to a kind of crown controlled roll dynamic analog grinding fixture, belong to papermaking processing equipment accessory technical field.

Background technology

Crown controlled roll is a kind of roller of energy fine adjustment control roll surface sag, can be divided into the types such as dancer and the controlled roller of subregion.Crown controlled roll is mainly comprised of alloy steel roll shaft, roller shell and the bearing assemble that is fixed on roll shaft, during work, controlled roller roll shaft is fixed, dancer roller shell is being supported and is rotating by the hydraulic oil of uniform pressure in nip total length, by regulating the pressure reduction of pressure oil and withdrawing oil to change the amount of deflection of roller shell; Subregion roller roller shell is divided into several districts in nip total length, between roller shell inwall by static pressure support piston and High Rotation Speed, form liquid static-pressure support oil film, roller shell is suspended on roll shaft and rotates, by regulating the input pressure of every group of pressurizing piston to change the amount of deflection of roller shell.

There is one deck cover material on crown controlled roll roll body surface, this cover material is a kind of special elastic composite, and after using after a while, glue face there will be senile abrasion phenomenon, no matter from service equipment aspect, still control product quality aspect, all need glue face to grind.

Current domestic paper mill and machinery plant's grinding crown controlled roll roll body generally have two kinds of modes, a kind of mode is after roll body and roll shaft are fixed as one, with common roller grinding roll surface (as shown in Figure 1), no matter because being all opens on dancer or the roll body of subregion roller to be shaped with the groove of seal is installed or the hole that static pressure supports is installed, so there is in varying degrees roll shaft rotation energy imbalance, and the processing of roll shaft and roller shell endoporus exists the situation of decentraction unavoidably, therefore cannot reach high-precision requirement to roll body grinding (roll surface beat 0.02mm).Another kind of mode is to extract roll shaft out, the Special support axle supporting with corresponding roll body is installed at roll body two ends, take roll body two ends as benchmark, utilize the direct grinding roll surface of power (as shown in Figure 2) of grinding machine, though this mode can guarantee grinding precision, operation is reliably convenient, each all necessary dismounting crown controlled rolls that grinds, increased the labour intensity of work, inefficiency; And unloading process can damage roll body endoporus or seal, during assembling, must reconfigure corresponding new parts, extended milling cycle, increased manufacturing cost.

Summary of the invention

The object of the invention is to, a kind of roll shaft positioner location that adopts is provided, accessory drive VFC, in the situation that not removing crown controlled roll roller core, take roller core as supporting and fixing, utilizes auxiliary power driving roller pair roller surface to grind; Easy and simple to handle, do not damage roll body, save parts, grinding precision is high, reduces labour intensity, increases work efficiency, and shortens the crown controlled roll dynamic analog grinding fixture of milling cycle.

The present invention realizes above-mentioned purpose by the following technical solutions

This crown controlled roll dynamic analog grinding fixture consists of roll shaft positioner, adjustable tensioning support, Timing Belt, synchronous pulley, variable frequency reducer motor and frequency-converting control device, it is characterized in that: described roll shaft positioner is comprised of pressure ring, mounting disc, adjustment screw and dog screw, by pressure ring, install and be positioned on mandrel, in mounting disc, dispose door, adjustment screw is installed on pressure ring, door and be installed on mandrel and roll body between bearing inner race by adjustment screw, locate; Described adjustable tensioning support is comprised of fixed base plate, support and screw mandrel, fixed base plate is installed on by grinding machine, support and screw mandrel are installed on fixed base plate, variable frequency reducer motor is installed on support, variable frequency reducer motor is connected with the synchronous pulley on roll body by Timing Belt, and variable frequency reducer motor is connected with frequency-converting control device by wire.

The present invention's beneficial effect is compared with prior art:

This crown controlled roll dynamic analog grinding fixture adopts roll shaft positioner location, and accessory drive VFC is without the mandrel of dismounting crown controlled roll, simple to operation, has reduced labour intensity; By frequency-converting control device, can make the rotating speed of roll body can electrodeless adjustment within the scope of 4～50rpm, can selectively carry out grinding according to different roll body diameters and abrasion condition, applied widely.By adjustable tensioning support energy all around, adjust the distance between variable frequency reducer motor and roll body, thereby tensioning Timing Belt makes the bearing roller shell of rotary support roll body accurately, balance quality is high, and high conformity has guaranteed Grinding Machining Quality.Solve the common roller grinding of existing employing and be prone to roll shaft energy imbalance, cannot reach the high-precision requirement to roll body grinding, and extract roll shaft out and grind roll body with grinding machine, easily cause roll body endoporus or seal damage, dismantle roll body and more renew operation of components trouble, extend milling cycle, increase the problem of manufacturing cost.This crown controlled roll dynamic analog grinding fixture grinding precision is high, simple to operate, and crudy is good, is applicable to very much the crown controlled roll of grinding different structure and diameter.

Accompanying drawing explanation

Fig. 1 is the structural representation with common roller grinding roll surface in prior art;

Fig. 2 is the structural representation of using the direct grinding roll surface of power of grinding machine in prior art after the fixing roll body of special back shaft;

Fig. 3 is a kind of main TV structure schematic diagram of crown controlled roll dynamic analog grinding fixture;

Fig. 4 is a kind of plan structure schematic diagram of crown controlled roll dynamic analog grinding fixture;

Fig. 5 is a kind of side-looking structural representation of crown controlled roll dynamic analog grinding fixture.

In figure: 1, roll body, 2, roll shaft positioner, 3, adjustable tensioning support, 4, Timing Belt, 5, variable frequency reducer motor, 6, frequency-converting control device, 7, synchronous pulley, 8, pressure ring, 9, mounting disc, 10, adjustment screw, 11, dog screw, 12, door, 13, fixed base plate, 14, screw mandrel, 15, support, 16, mandrel.

The specific embodiment

Below in conjunction with accompanying drawing, embodiments of the present invention are described in detail:

This crown controlled roll dynamic analog grinding fixture consists of roll shaft positioner 2, adjustable tensioning support 3, Timing Belt 4, synchronous pulley 7, variable frequency reducer motor 5 and frequency-converting control device 6.Described roll shaft positioner 2 is comprised of pressure ring 8, mounting disc 9, adjustment screw 10 and dog screw 11, by pressure ring 8, install and be positioned on mandrel 16, in mounting disc 9, dispose door 12, door 12 is in order to prevent that grinding fluid from entering that roll body 1 is interior to cause damage to roll body 1.Adjustment screw 10 is installed on pressure ring 8, door 12 and be installed on mandrel 16 and roll body 1 between bearing inner race by adjustment screw 10, locate, avoid because the factors such as bearing installation accuracy and play affect grinding quality.

Described adjustable tensioning support 3 is comprised of fixed base plate 13, support 15 and screw mandrel 14, fixed base plate 13 is installed on by grinding machine, support 15 and screw mandrel 14 are installed on fixed base plate 13, variable frequency reducer motor 5 is installed on support 15, and variable frequency reducer motor 5 is connected with the synchronous pulley 7 on roll body 1 by Timing Belt 4; By fixed base plate 13 and the screw mandrel 14 of adjustable tensioning support 3, can adjust the distance between variable frequency reducer motor 5 and roll body 1 in all around, thereby the Timing Belt of variable frequency reducer motor 5 is carried out to tensioning; Variable frequency reducer motor 5 is ground roll body 1 surface by the mode driving roller of this indirect motion.Variable frequency reducer motor 5 is connected with frequency-converting control device 6 by wire.Roll body 1 is by the control of frequency-converting control device 6, makes its rotating speed can electrodeless adjustment within the scope of 4～50rpm, can select according to different roll body diameters and abrasion condition.

This crown controlled roll dynamic analog grinding fixture is installed roll body 1 by roll shaft positioner 2, does not need to remove the mandrel 16 of crown controlled roll, simple to operation, has improved operating efficiency.By with mandrel 7 stationary positioned grindings, the bearing that makes to connect roll body 1 and mandrel 7 can be with high-precision rotary supporting roller shell, and uniformity, balance are good, and grinding precision is high.By frequency-converting control device 6, control the rotary speed of roll body 1, can carry out grinding for the crown controlled roll of different structure and diameter, applied widely.

The course of work of this crown controlled roll dynamic analog grinding fixture is:

When needs grind crown controlled roll surface, first remove the end cap at roll body two ends, at roll body 1 two ends, dynamic analog grinding fixture is installed respectively, Timing Belt 4 is installed and by adjustable tensioning support 3, is regulated the tensioning of Timing Belt, by frequency-converting control device 6, start variable frequency reducer motor 5, according to the difference of roll body 1 diameter, regulate corresponding rotating speed (rotating speed of roll body 1 is 4～50rpm), according to roll body 1 Facing material, select emery wheel, speed of grinding wheel and grinding fluid (emery wheel turns to contrary with the direction of rotation of roll body 1), start grinding machine and can carry out grinding to roll body.

The above is the specific embodiment of this invention, above-mentioned not illustrating is construed as limiting flesh and blood of the present invention, person of an ordinary skill in the technical field is reading after this description and can the above-mentioned specific embodiment made an amendment or is out of shape, and does not deviate from the spirit and scope of the invention.

Claims

1. a crown controlled roll dynamic analog grinding fixture, it is by roll shaft positioner (2), adjustable tensioning support (3), Timing Belt (4), synchronous pulley (7), variable frequency reducer motor (5) and frequency-converting control device (6) form, it is characterized in that: described roll shaft positioner (2) is by pressure ring (8), mounting disc (9), adjustment screw (10) and dog screw (11) composition, by pressure ring (8), install and be positioned on mandrel (16), in mounting disc (9), dispose door (12), adjustment screw (10) is installed on pressure ring (8), door (12) and be installed on mandrel (16) and roll body (1) between bearing inner race by adjustment screw (10) location, described adjustable tensioning support (3) is comprised of fixed base plate (13), support (15) and screw mandrel (14), fixed base plate (13) is installed on by grinding machine, support (15) and screw mandrel (14) are installed on fixed base plate (13), variable frequency reducer motor (5) is installed on support (15), variable frequency reducer motor (5) is connected with the synchronous pulley (7) on roll body (1) by Timing Belt (4), and variable frequency reducer motor (5) is connected with frequency-converting control device (6) by wire.