CN2229326Y

CN2229326Y - Sharpening cutting edge device of blade for roll stock-cutter

Info

Publication number: CN2229326Y
Application number: CN 94221003
Authority: CN
Inventors: 皋臻宏
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-09-06
Filing date: 1994-09-06
Publication date: 1996-06-19
Anticipated expiration: 2004-09-06

Abstract

The utility model belongs to the field of machinery and is suitable for blade sharpening of glass cutting machines, bamboo cutting machines and cloth cutting machines in paper making industries. By means of a pure mechanical means, the utility model is a pilot mechanism gear is cut out an elliptic curve, an equal slope line of an oblique angle, and a parallel line by a pilot mechanism in a rolling mode; the utility model is amplified to the running of and the feeding actions of a cutter according to a fixed ratio through a longitudinal / transverse coordinate conversion mechanism and is matched with a rotary sander or a planar grinding machine with a large specification to produce a required cutting edge and meet to requirement of 'equal interstice operation 'of a stock cutting blade. The utility model has the advantages of portability and strong matching adaptability and can be used as an accessory of a stock cutting machine or a single machine for delivering goods. The utility model is generally suitable for stock cutting machine using units and manufacturing industries and blade producing enterprises.

Description

Rotor formula stock-cutter blade curve Sharpening device

This device belongs to mechanical field, is applicable to the sharpening work of the blades such as rotor formula chaffcutter, bamboo cutter and rag cutter in non-wood pulp paper mill.

The ideal operation state of stock-cutter blade is dead knife, is " waiting the gap " cutting in the fly cutter blade length range on bed plate and the rotor.But owing to improve the needs of service load situation, fly cutter is placed on the plane that forms an angle with the rotor central plane; When blade was straight sword, the radius of gyration of each point was all greater than the radius of gyration of mid point beyond the fly cutter cutting edge line mid point; Thereby the not equal clearance problem when having produced the fly cutter of straight sword and bed plate coupling, that is the problem that blank is of poor quality or the fiber crops of toughness material etc. can't cut.Separate never the method for equal clearance problem and be and make the fly cutter sword be elliptic curve with its mid point to the plane of the vertical line of rotor axis comprising itself, the elliptic curve of perhaps counteredge being worn into identical parameters is complementary with straight sword fly cutter.At present, Chang Yong stock-cutter rotor specification is many between Φ 350 * 460～Φ 430 * 690mm.Be that Φ 430 * 690, the tilting angle of above-mentioned blade are that 4 ° chaffcutter is an example with the rotor: if bed plate and fly cutter are straight sword, when its two-end-point contraposition gap was " 0 ", the mid point gap reached 1.34mm; And realize that " waiting the gap " desired elliptic curve parameter is:

Major axis, 2a=6164mm;

Minor axis, 2b=430mm;

Focal length, 2c=6149mm.If make approximate grinding by circular arc line, its radius of curvature---

R≈44413mm。Except that adopting large-size numerical control machine processing, no matter conventional processing, detection means are direct sharpenings to these parameters or make model, pattern on engineering, all cannot say for sure its precision.Therefore, still there is not special-purpose sharpening equipment available, that can satisfy users' needs conscientiously so far; The general straight sword supply of material of manufactory, stock-cutter applying unit then are in straight sword, equal clearance, low usefulness cutting or hand grinding be not with the rough improvement situation of equal clearance problem not.Simultaneously, also will be difficult for being accepted even if make special-purpose blade grinding machine because of acquisition expenses is high by taking the most medium-sized and small enterprises in family.So, be badly in need of a kind of easy, low input and effective sharpening equipment of design.

The purpose of this device design just is to provide a kind of light, accurate Sharpening a knife blade that is applicable to that various rotor stock-cutters realize that " waiting the gap " operates to equip.

This device adopts pure mechanical means, go out slope line and three kinds of tracks of parallel lines such as elliptic curve, fly cutter oblique angle by guide mechanism rolling cut, via longitudinal and transverse coordinate transform mechanism surely than the operation that is enlarged into blade, feed motion, cooperate abrasive machine or big specification surface grinding machine to be processed into required cutting edge, satisfy " waiting gap operating " requirement of blank blade.

This device is a kind of brand-new rotor stock-cutter Sharpening a knife blade mechanical device; The non-existing profile grinder of its range of work can reach; Its portability, economy and use abrasive machine can grinding the general applicability characteristics, the condition that stock-cutter manufactory and applying unit are transformed with the technical equipment of realizing growing out of nothing that is widely used in is provided.

The concrete structure of this device is provided by following embodiment and accompanying drawing thereof:

Fig. 1 is this device front view;

Fig. 2 is the A-A cutaway view of Fig. 1;

Fig. 3 is the structure chart of the guide pillar among Fig. 1;

Fig. 4 is the F-F cutaway view of Fig. 3;

Fig. 5 is a parallel motion drift gage nomogram;

Fig. 6 is a Sharpening a knife blade compacting mechanism schematic diagram.

The concrete structure and the working condition of this device are described in detail in detail below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6:

Fig. 3 and guide pillar body (7) shown in Figure 4 with the utilization of axle (10) two axial lines angle fixed in roller (11) regulate with adjusting screw (12) so that adapt to different blade included angle needs.Steel ball (9) rolling cut of 4 of guide pillar body (7) the work same respectively contacts of phase place (8) forms track separately and guides different sharpening operations.

When the steel ball (9) of contact (8) rolled mutually with the tilting face of cylinder of " i " phase place of guide pillar body (7), its rolling cut locus of points was an elliptic curve.At this moment, minor axis (horizontal stroke) transformation of coordinates situation is seen Fig. 2; The axial displacement of contact (8) is delivered to the drive crank (14) of quadric chain through lever (13), makes it around axle (15) swing, thus by fixed than be enlarged into connecting rod (16) vertical, be the lateral displacement of blade (37).Adjust and keep the pressure of workpiece with spring (17) to emery wheel.So being coupled with of both effects of lever (13) and spring (17) is beneficial to the instantaneous extraordinary load that cushions grinding points.Adopt four connecting rods to make the linearity deviation that minor axis coordinate transform mechanism certainly will produce displacement, but the result of calculation of Fig. 5 prove that this deviation is permitted.

Fig. 1, Fig. 2 are seen in major axis (indulging) transformation of coordinates; When relatively moving between head framework (5) and slide rail (6), sprocket wheel (18) rolls along the chain (21) in the embedding chain guide rod (20), decide to be the rotation of sprocket wheel (19) through gear train (22) again, and then drive guide mechanism (1) work vertically moving with respect to contact (8) through chain (23) than slowing down; Thereby kept head framework (5), that is the blade (37) on it of being installed fixed than the multiple relation with guide pillar body (7) length travel amount, reach ordinate conversion purpose.

With two coordinate transforms blade compacting mechanism that is foundation as shown in Figure 6, " 61 " are the guide pillar body (7) of supposition and the rolling cut curve of steel ball (9) among the figure, " 62 " are the blade operation curve of analogy, and " 63 " are the corresponding edge curve of wearing into, and " 64 " are emery wheel.

" ii " of guide pillar body (7), " iv " phase place two planes and axle (10) axis angle equal the blade oblique angle, guide pillar body (7) is swung in big angular width through system for coordinate transformation transmission rocking bar (14) with the slope tracks such as oblique angle of steel ball (9) rolling cut, the blade that is installed on location-plate (24) is turned round in reciprocal backswing dynamically to be finish grinded, so that further eliminate deviation, reach more high accuracy.This method will produce ± and 7 ° circumferential clearance changes, but do not influence cutting condition and rotor dynamic balancing.

" iii " phase place of guide pillar body (7) is a parallel plane, and the rolling cut track does not have abscissa to be changed, and is used for straight sharpening and cuts.

Vertical feed mechanism shown in Figure 1 (4) aims at medium and small user and uses the grinding of normal sands turbine and design.Handwheel (25) rotates differential screw rod (29) through sprocket wheel (26), pin wheel and sprocket system (27), sprocket wheel (28); This screw rod is left hand thread for upper and lower section, but the pitch difference, so when it rotates, or transmission crossbeam (30) rises and slide rail (6) descends, or in contrast, reach differential microfeed purpose.When handwheel (31) rotates the snap-action screw rod (36) (internal thread is left-handed, external screw thread dextrorotation trapezoidal) of internal and external threads, slide rail (6) fast lifting through sprocket wheel (32), pin wheel and sprocket system (33), sprocket wheel (34), feather key (35).Total lifting travel can satisfy the sharpening operation requirement of two stations.

For the producer that is equipped with big specification surface grinding machine, then need not to be equipped with vertical feed parts and frame (38); As long as head framework (5) is fixed on the Grinder bench, in addition with slide rail (6) flexible connection in other static positions; In case workbench moves back and forth, and uses grinding wheel feed, can realize the various functions of this device.

This device only needs to decide ratio by coordinate transform and changes guide pillar body (7) diameter and contact (8) length, promptly can be used for the Sharpening a knife blade operation of all size rotor.Design code manufactory provides serial guide pillar body and contact, chooses for the user.

Claims

1, a kind of rotor formula stock-cutter blade curve Sharpening device is characterized in that guide mechanism (1) and head framework (5) move axially along slide rail (6) respectively, and keeps both differentials, is the fixed than relation of relative shift by means of ordinate mapping device (2); (four on 50 and with it axially synchronous connecting rod abscissa mapping devices (3) are coupled in approximate brachmorphy position with two active forces of lever (13) and spring (17), and the axial displacement with contact (8) during with guide pillar body (7) rolling cut is swung to be supported on the head framework; Slide rail (6) is then by vertical feed mechanism (4) supporting and driving.

2, rotor formula stock-cutter blade curve Sharpening device according to claim 1, it is characterized in that utilizing between the guide pillar body (7) of guide mechanism (1) and axle (10) two axial lines fixed in roller (11) and screw (12) centering setting angle; After deciding the angle, i, the ii of guide pillar body (7) (iv), four of iii work phase place promptly is positioned as the tilting face of cylinder, inclined-plane and parallel plane, respectively in order to slope line and three kinds of rolling cut tracks of parallel lines such as the elliptic curve of guiding steel ball (9), fly cutter oblique angles.

3, rotor formula stock-cutter blade curve Sharpening device according to claim 1, it is characterized in that ordinate mapping device (2) is made of the chain drive-belt (23) of embedded chain (21), sprocket wheel (18), gear train (22), sprocket wheel (19) and the guide mechanism (1) of slide rail guide rod (20), be in operation to keep the scaling transformation of length travel amount between guide pillar body (7) and the blade (37).

4, rotor formula stock-cutter blade curve Sharpening device according to claim 1, it is characterized in that abscissa mapping device (3) adopts parallel four-bar linkage, master and slave two revoliving arm length of its drive crank (14) are at double than relation, the rolling cut curve abscissa that lever (13) is transmitted change be enlarged into connecting rod (16) vertically, be the lateral displacement of blade (37).

5, rotor formula stock-cutter blade curve Sharpening device according to claim 1 is characterized in that vertical feed mechanism (4) drives two differential screw rods (29) through sprocket wheel (26), sprocket wheel and pin wheel system (27), sprocket wheel (28) and the differential crossbeam (30) that drives in the wrong direction is done micro-work feed; Perhaps pass through sprocket wheel (32), sprocket wheel and pin wheel system (33), sprocket wheel (34) and the reverse snap-action screw rod of double end (36) and drive the fast lifting motion.