CN101293316B - Method and apparatus for processing positive displacement drill bearing - Google Patents
Method and apparatus for processing positive displacement drill bearing Download PDFInfo
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- CN101293316B CN101293316B CN2008100500562A CN200810050056A CN101293316B CN 101293316 B CN101293316 B CN 101293316B CN 2008100500562 A CN2008100500562 A CN 2008100500562A CN 200810050056 A CN200810050056 A CN 200810050056A CN 101293316 B CN101293316 B CN 101293316B
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Abstract
The invention discloses a method and a device for processing a bearing of a screw drill. The method adopts cold-rolling technique to process, firstly, an external sleeve blank or an internal sleeve blank of the bearing are processed; then the bearing of the screw drill is coldly rolled; a hydraulic oil cylinder (1) pushes a rolling wheel (7) to move downwards to be contacted with the bearing blank arranged on a rolling core roller (10) by pressurizing, thus lead the rolling wheel (7) to be parallel with the central shaft of the rolling core roller (10) and lead the rolling core roller to be contacted with the drive wheel (12) of a rotating mechanism; a coupler (14) connected with a motor (16) by a reducer drives the drive wheel and a driven wheel (13) to lead the rolling core roller to rotate; the rolling wheel (7) continuously puts pressure on the bearing blank until the bearing blank is deformed to achieve workpiece shaping standard. The invention can remarkably improve the surface fatigue intensity of a part, can eliminate a lathe machining process and can lead the utilization rate of materials to be improved from the former 45 percent to over 75 percent, which leads the power consumption of the device to be greatly reduced.
Description
Technical field
The present invention relates to the processing technique field of bearing, be particularly useful for a kind of method and device of processing positive displacement drill bearing.
Background technology
At present, in mechanical industry, the processing positive displacement drill bearing prior art generally adopts: round steel is become to bearing outside collar and inside race blank through the whole footpath of heats forged.Then by lathe, bearing outside collar and inside race blank are carried out to multitool turning, usually be divided into Four processes: at first, the black oxidation skin turning of forging qualified blank surface is fallen.Take wherein a plane is another plane of benchmark turning and inner circle, and then another plane of car and cylindrical conversely, be commonly called as rough turn.Secondly, rough turn blank is later repeated to a upper process, be commonly called as finish turning.Again, for the edge of work sharp in handling process is unlikely to handle incised wound and convenient the installation, need its chamfering shield.Finally, take the plane cylindrical as benchmark turning core position--R raceway, returned afterwards another R that sends a car.
Because operating personnel's technical merit or equipment breaks down, in forging process, easily cause blank workpiece deformation, surface that the factors such as dell crimping are arranged, make blank not meet dimensional requirement and cause scrapping.Particularly at turning bearing outside collar and inside race blank, there are a lot of problems: 1. in rough turn process, crimping and dell often appear in datum level, select the bad workpiece that directly causes to scrap, because oxide skin spreads all over surface of the work, easy destruction of the alloy cutter head in a flash of contact, cost is increased.2. in the finish turning process, the oxide skin on most of blank surface is fallen by car when rough turn, but does not also have car to arrive preliminary dimension, continues turning material and electric power resource are wasted.3. shield process rhythm is very fast, and the people sets about easily injured in fatigue state.4. turning R raceway is the most difficult most important part in process, thus the too fast acceleration tool damage of the long-pending large heating of cutter vehicle bevel.Turning R raceway is the place of wasting material most, and the expense iron of generation accounts for whole more than 50% of iron of blank expense.
Summary of the invention
For solving the problem of prior art existence, the purpose of this invention is to provide a kind of method and device of processing positive displacement drill bearing; Can significantly improve the surface fatigue intensity of part and the sensitiveness of the tired breach of reduction, cancel loaded down with trivial details lathe process, thereby improved the quality of products.The utilization rate that makes material is brought up to more than 75% by former 45%, makes scrappage directly drop to zero, and the power consumption of equipment is greatly reduced, and meets the spirit that national energy-saving reduces discharging.
For achieving the above object, the present invention adopts technical scheme as described below:
A kind of method of processing positive displacement drill bearing, be to adopt cold roll processes positive displacement drill bearing, and its step is as follows:
1), external sleeve blank or the inner sleeve blank of machining bearing: adopt the strong material 55SiMoVA round steel of plasticity, diameter is at Φ 60mm-Φ 140mm; Round steel is calculated to length according to the model of drilling tool bearing and with sawing machine, be cut into segment, again it is put into to the stove the inside and is heated to 500-700 degree left and right, then take out with pneumatic hammer and be forged into ring-type, the more whole footpath of the height of inner circle, cylindrical is expanded to bearing outside blank or the bearing inner sleeve blank of preliminary dimension with staving press; The overcoat external diameter of model of the same race and inner sleeve external diameter be than old-fashioned little 8%-30%, few 30%-50% that weight ratio is old-fashioned; Supporting drilling tool bearing designation is:
The heavy 2.61-4.00KG of the material of 244 type outer collar; The heavy 1.72-2.76KG of the material of inside race;
The heavy 1.45-2.38KG of the material of 215 type outer collar; The heavy 1.20-2.04KG of the material of inside race;
The heavy 1.31-2.18KG of the material of 203 type outer collar; The heavy 0.99-1.74KG of the material of inside race;
The heavy 1.41-2.20KG of the material of 197 type outer collar; The heavy 0.92-1.64KG of the material of inside race;
The heavy 0.95-1.68KG of the material of 172 type outer collar; The heavy 0.65-1.26KG of the material of inside race;
The heavy 0.88-1.59KG of the material of 165 type outer collar; The heavy 0.60-1.19KG of the material of inside race;
The heavy 0.30-0.77KG of the material of 120 type outer collar; The heavy 0.22-0.51KG of the material of inside race;
2), cold roll positive displacement drill bearing: at normal temperatures and pressures, hydraulic jack promote rolling wheel move down with roll the core roller on the bearing blank placed exert pressure and contact, guarantee rolling wheel and roll core roller central axes, and making to roll the sliding iron of core roller by the V-type line slideway and contact with the driving wheel of rotating mechanism; The shaft coupling that motor via reducer connects drives driving wheel and secondary driving wheel makes to roll the rotation of core roller, roll the core roller by and bearing blank between frictional force drive bearing blank and rotate, the friction between bearing blank and rolling wheel drives again the rolling wheel rotation; Under the promotion of feed system, rolling wheel, by bearing blank is exerted pressure continuously, dwindles the centre-to-centre spacing rolled between core roller and rolling wheel gradually simultaneously, until distortion reaches cylindrical moulding standard, finishes; Through rolling the workpiece of distortion, it is large that external diameter becomes, and wall thickness reduces, axially broadening slightly;
A. cold roll drilling tool bearing outside: hydraulic jack and motor driving bearing overcoat rolling wheel, driving wheel and bearing outside respectively roll the core roller, to 55SiMoVA bearing outside blank two R raceway grooves, cylindrical, inner circle, height and chamfering of moulding bearing outside successively from reset condition;
B. cold roll drilling tool bearing inner sleeve: hydraulic jack and motor driving bearing inner sleeve rolling wheel, driving wheel and bearing inner sleeve respectively roll the core roller, to 55SiMoVA bearing inner sleeve blank two R raceway grooves, cylindrical, inner circle, height and chamfering of moulding bearing inner sleeve successively from reset condition.
A kind of device of processing positive displacement drill bearing, have propulsive mechanism, excircle of workpiece roller-compaction mechanism, workpiece inner circle shaping mechanism, rotating mechanism, cooling body and frame; Frame is doorframe shape, and the propulsive mechanism that upper rack arranges connects excircle of workpiece roller-compaction mechanism; Be provided with a workpiece inner circle shaping mechanism moving up and down on the both sides V-type guiding rail mechanism of central rack; The bearing component blank that rolls the setting of core roller shaping area of workpiece inner circle shaping mechanism is corresponding with the rolling wheel shaping area of the excircle of workpiece roller-compaction mechanism moved down; The driving wheel and the secondary driving wheel that roll the rotating mechanism that core roller and frame lower arrange of bearing component blank both sides are corresponding; Excircle of workpiece roller-compaction mechanism and workpiece inner circle shaping mechanism are provided with cooling body to the cold roll of workpiece bearing blank, and bearing component blank one side is provided with the cylindrical moulding and measures system.
The device of described a kind of processing positive displacement drill bearing, propulsive mechanism consists of by push rod screwed connection c shape framework the hydraulic jack be fixed on frame; C shape framework is bolted respectively the mandrel fixed head by the two ends of pressure plate and forms, and the pressure plate center is provided with the silk hole that connects push rod; Push rod also can be set to bulb, and its c shape framework pressure plate centre bore also can be corresponding not saturating sphere hole, and the push rod overcoat of inserting in sphere hole has fixed head and is bolted on pressure plate; C shape framework also can be cast and to be integrated.
The device of described a kind of processing positive displacement drill bearing, rotating mechanism by motor connect reductor by shaft coupling with pass frame on the driving wheel ring flange axle of fixing self-aligning roller bearing be connected; Between the wheel shaft of driving wheel and secondary driving wheel, by screwed connection, and fixed by pin; The both sides ring flange of driving wheel and secondary driving wheel is fixedly connected with by screw respectively, and secondary driving wheel ring flange axle is fixed on the self-aligning roller bearing of frame.
The device of described a kind of processing positive displacement drill bearing, the V-type guiding rail mechanism consists of sliding rail, back-moving spring and guide rail, and the sliding rail center is fixed with spacing mandrel, and the sliding rail both sides are V-shaped to be contacted with V-type rail, and V-type rail is fixed on frame; The sliding rail lower end is provided with back-moving spring.
The device of described a kind of processing positive displacement drill bearing, excircle of workpiece roller-compaction mechanism consists of rolling wheel mandrel, bearing, rolling wheel, and the rolling wheel mandrel is fixed on two mandrel fixed heads of c shape framework, and has locking nut to fix; Two cover self-aligning thrust roller bearings on the rolling wheel mandrel, be provided with a lining on two cover roller bearings, and the lining overcoat has rolling wheel, and has locking nut to fix; Be provided with the cylindrical forming tank of bearing outside in the middle of the rolling wheel cylindrical, be provided with the height moulding h, outer through moulding Φ 1 and chamfering moulding α of bearing in forming tank, chamfering is right angle or arc angle.; Forming tank in the middle of the rolling wheel cylindrical also can be set to the cylindrical forming tank of bearing inner sleeve, comprising: the height moulding h of bearing, outer through moulding Φ 1, double channel moulding R.
The device of described a kind of processing positive displacement drill bearing, workpiece inner circle shaping mechanism is by rolling the core roller and spacing mandrel forms, roll the two cover ball bearings that arrange in the axis hole of core roller two ends and be connected and fixed respectively spacing mandrel and mobile spacing mandrel, the other end of fixing spacing mandrel and mobile spacing mandrel is fastened on respectively on the sliding rail of the V-type line slideway that the central rack both sides arrange; Roll in the middle of the core roller inner circle forming tank that is provided with bearing outside, be provided with the double channel moulding R, interior through moulding Φ 2 of bearing inner circle in forming tank; The forming tank that rolls core roller centre also can be set to the inner circle forming tank of bearing inner sleeve, and it is interior through moulding Φ 2 and chamfering moulding α that the inner circle forming tank is provided with bearing, and chamfering is right angle or arc angle.
The device of described a kind of processing positive displacement drill bearing, cooling body consists of cooling tube, oil pump, cooling oil groove; Oil pump in cooling oil groove is connected to by by the bearing component of cold roll by cooling tube.
The device of described a kind of processing positive displacement drill bearing, cylindrical moulding determinator is configured to propping up by the dial gauge of measuring the excircle of workpiece wall thickness, and dial gauge is fixed on frame by support, also can be arranged to travel switch or light controlling device.
The device of described a kind of processing positive displacement drill bearing, this device also can be arranged to horizontal, and an end is set to propulsive mechanism level connection joint excircle of workpiece roller-compaction mechanism; The other end is set to driving wheel and the secondary driving wheel of rotating mechanism, is provided with the workpiece inner circle shaping mechanism that can move horizontally between it; Propulsive mechanism and rotating mechanism are fixed on base, the core roller that rolls of the rolling wheel of excircle of workpiece roller-compaction mechanism and workpiece inner circle shaping mechanism is fixed on the horizontal guide rail of base, cold roll to the workpiece bearing blank is provided with cooling body, and bearing component blank one side is provided with the cylindrical moulding and measures system.
Owing to adopting technical scheme as above, the present invention has following superiority:
The method of this kind of processing positive displacement drill bearing and device, the plasticity of having utilized 55SiMoVA realizes purpose with high tonnage cold roll, has made up the deficiency of above-mentioned old technique, directly saves lathe multi-cutter process process, and scrappage is directly reduced.
1. from quality of materials: 55SiMoVA makes matallic surface layer generation plastic deformation under new-type processes, thereby forms high rigidity and high-intensity hardened layer, and this surface reinforcing method is called the areal deformation strengthening, also claims work hardening.The strengthening layer bit density increases, and the subgrain structure refinement is even, dense structure, and the metal streamline continuous whole, can significantly improve the surface fatigue intensity of part and the sensitiveness of the tired breach of reduction, thereby improve the quality of products.
2. the cold roll workpiece also has the effect of experimental material, and the 55SiMoVA material comes out impurity and pore in material through too high tonnage extruding at normal temperatures and pressures.
3. economically: cancelled loaded down with trivial details lathe process, directly the two R raceway grooves of moulding, cylindrical, inner circle, highly and chamfering successively.Make the power consumption of equipment reduce over half.The utilization rate of material from before 45% bring up to more than 75%, the call that positive response national energy-saving reduces discharging.
The accompanying drawing explanation
Fig. 1 is the process chart of processing positive displacement drill bearing lasso of the present invention;
Fig. 2 is the structural representation of cold roll processing positive displacement drill bearing overcoat;
Fig. 3 is the work sheet that rolls of cold roll processing positive displacement drill bearing overcoat;
Fig. 4 is the structural representation of cold roll processing positive displacement drill bearing inner sleeve;
Fig. 5 is the work sheet that rolls of cold roll processing positive displacement drill bearing inner sleeve;
Fig. 6 is the structural representation of hydraulic feed device;
Fig. 7 be the cold roll bearing outside the mould rolling wheel, roll the structural representation of core roller;
Fig. 8 be the cold roll bearing inner sleeve the mould rolling wheel, roll the structural representation of core roller;
In figure: the 1-hydraulic jack; The 2--hydraulic push rod; 3-C shape advances framework; 4 (a.b)-roller bearings; 5-rolling wheel mandrel; The 6-locking nut; The 7-rolling wheel; The sliding iron of 8-V type straight line; The spacing mandrel of 9-; 10-rolls the core roller; The 11-bearing; The 12-driving wheel; The secondary driving wheel of 13-; The 14-shaft coupling; The 15-reductor; The 16-motor; 17-cylindrical wall thickness determinator; The 18-cooling tube; The 19-oil pump; The cooling oil groove of 20-; The 21-screw; The 22-blank; The 23-lining; 24-method pulling plate; The 25-alignment pin; The 26-pressure plate; 27-rolling wheel mandrel fixed head; The 28-fixed head; The 29-back-moving spring.
The specific embodiment
As shown in Fig. 1,2,3,4,5,6,7,8: a kind of method of processing positive displacement drill bearing is to adopt cold roll processes positive displacement drill bearing, and its step is as follows:
1), external sleeve blank or the inner sleeve blank of machining bearing: adopt the strong material 55SiMoVA round steel of plasticity, diameter is at Φ 60mm-Φ 140mm; Round steel is calculated to length according to the model of drilling tool bearing and with sawing machine, be cut into segment, again it is put into to the stove the inside and is heated to 500-700 degree left and right, then take out with pneumatic hammer and be forged into ring-type, the more whole footpath of the height of inner circle, cylindrical is expanded to bearing outside blank (22a) or the bearing inner sleeve blank 22b of preliminary dimension with staving press); The overcoat external diameter of model of the same race and inner sleeve external diameter be than old-fashioned little 8%-30%, few 30%-50% that weight ratio is old-fashioned.Supporting drilling tool bearing designation and the heavy KG comparison sheet one of old technique blanking:
2), cold roll positive displacement drill bearing: at normal temperatures and pressures, hydraulic jack (1) promotion rolling wheel (7) moves down with the bearing blank (22a) that rolls the upper placement of core roller (10) and exerts pressure and contact, guarantee rolling wheel (7) and roll core roller (10) central axes, and making to roll the sliding iron (8) of core roller (10) by the V-type line slideway and contact with the driving wheel (12) of rotating mechanism; The shaft coupling (14) that motor (16) connects by reductor (15) drives driving wheel (12) and secondary driving wheel (13) makes to roll core roller (10) rotation, roll core roller (10) by and bearing blank between frictional force drive bearing blank and rotate, the friction between bearing blank and rolling wheel (7) drives again rolling wheel (7) and rotates; Under the promotion of feed system, rolling wheel (7), by bearing blank is exerted pressure continuously, dwindles the centre-to-centre spacing rolled between core roller (10) and rolling wheel (7) gradually simultaneously, until distortion reaches cylindrical moulding standard, finishes; Through rolling the workpiece of distortion, it is large that external diameter becomes, and wall thickness reduces, axially broadening slightly;
A. cold roll drilling tool bearing outside: hydraulic jack (1) and motor (16) driving bearing overcoat rolling wheel, driving wheel (12) and bearing outside respectively roll the core roller, to 55SiMoVA bearing outside blank two R raceway grooves, cylindrical, inner circle, height and chamfering of moulding bearing outside successively from reset condition;
B. cold roll drilling tool bearing inner sleeve: hydraulic jack and motor driving bearing inner sleeve rolling wheel, driving wheel (12) and bearing inner sleeve respectively roll the core roller, to 55SiMoVA bearing inner sleeve blank two R raceway grooves, cylindrical, inner circle, height and chamfering of moulding bearing inner sleeve successively from reset condition.
The device of this kind of processing positive displacement drill bearing, have propulsive mechanism, excircle of workpiece roller-compaction mechanism, workpiece inner circle shaping mechanism, rotating mechanism, cooling body and frame; Frame is doorframe shape, and the propulsive mechanism that upper rack arranges connects excircle of workpiece roller-compaction mechanism; Be provided with a workpiece inner circle shaping mechanism moving up and down on the both sides V-type guiding rail mechanism of central rack; The bearing component blank that rolls core roller (10) shaping area setting of workpiece inner circle shaping mechanism is corresponding with rolling wheel (7) shaping area of the excircle of workpiece roller-compaction mechanism moved down; The driving wheel (12) and the secondary driving wheel (13) that roll the rotating mechanism that core roller (10) and frame lower arrange of bearing component blank both sides are corresponding; Excircle of workpiece roller-compaction mechanism and workpiece inner circle shaping mechanism are provided with cooling body to the cold roll of workpiece bearing blank, and bearing component blank one side is provided with the cylindrical moulding and measures system.
Propulsive mechanism consists of by push rod (2) screwed connection c shape framework (3) the 8-50 ton adjustable hydraulic hydraulic jack (1) be fixed on frame; C shape framework consists of by bolt (21) connecting mandrel fixed head (27) respectively the two ends of pressure plate (26), and pressure plate (26) center is provided with the silk hole that connects push rod (2); Hydraulic jack (1) promotes C type framework, and c shape framework passes to rolling wheel by mandrel by thrust, and the rolling wheel two ends are locking nuts.
The push rod of propulsive mechanism (2) also can be set to bulb, its c shape framework pressure plate (26) centre bore also can be corresponding not saturating sphere hole, and push rod (2) overcoat of inserting in sphere hole has fixed head (28) and is bolted on pressure plate; C shape framework also can be cast and to be integrated.
Rotating mechanism connects reductor (16) by the motor (16) of 18.5KW 1470r/m rotating speed, by shaft coupling, drives driving wheel and secondary driving wheel.Shaft coupling (14) is connected with driving wheel (12) the ring flange axle of self-aligning roller bearing (4b) through fixing on frame; By screwed connection, and fixing by pin (25) between the wheel shaft of driving wheel and secondary driving wheel; The both sides ring flange (24) of driving wheel and secondary driving wheel is fixedly connected with by screw (21) respectively, and secondary driving wheel (13) ring flange axle is fixed on the self-aligning roller bearing (4b) of frame.Between shaft coupling and driving wheel, by ring flange, connected, middle by self-aligning roller bearing and alignment pin transition.In like manner, secondary driving wheel is also to be formed by connecting by self-aligning roller bearing, alignment pin and ring flange.
The V-type guiding rail mechanism consists of sliding rail (8), back-moving spring (29) and guide rail, and the sliding rail center is fixed with spacing mandrel (9), and sliding rail (8) both sides are V-shaped to be contacted with V-type rail, and V-type rail is fixed on frame; Sliding rail (8) lower end is provided with back-moving spring (29).
The Workpiece shaping system comprises: the mechanism of excircle of workpiece roller-compaction and the moulding of workpiece inner circle.
Excircle of workpiece roller-compaction mechanism consists of rolling wheel mandrel (5), bearing, rolling wheel (7), and rolling wheel mandrel (5) is fixed on two mandrel fixed heads (27) of c shape framework, and has locking nut (6) fixing; Two cover self-aligning thrust roller bearings (4a) are housed on the rolling wheel mandrel, on two cover roller bearings, are provided with a lining (23), lining is cylindrical, and its overcoat has rolling wheel (7), and has locking nut (6) fixing.
Be provided with the cylindrical forming tank of bearing outside in the middle of rolling wheel (7) cylindrical, be provided with the height moulding h, outer through moulding Φ 1 and chamfering moulding α of bearing in forming tank, chamfering is right angle or arc angle.
Forming tank in the middle of rolling wheel (7) cylindrical also can be set to the cylindrical forming tank of bearing inner sleeve, comprising: the height moulding h of bearing, outer through moulding Φ 1, double channel moulding R.
Workpiece inner circle shaping mechanism forms by rolling core roller (10) and spacing mandrel (9), roll the two cover ball bearings (11) that arrange in the axis hole of core roller (10) two ends and be connected and fixed respectively spacing mandrel (9) and mobile spacing mandrel, the other end of fixing spacing mandrel and mobile spacing mandrel is fastened on respectively on the sliding rail (8) of V-type line slideway of central rack both sides setting;
Roll the inner circle forming tank that is provided with bearing outside in the middle of core roller (10) for shaping area, be provided with the double channel moulding R, interior through moulding Φ 2 of bearing inner circle in forming tank.
The forming tank that rolls core roller (10) centre also can be set to the inner circle forming tank of bearing inner sleeve, is provided with bearing in forming tank interior through moulding Φ 2 and chamfering moulding α, and chamfering is right angle or arc angle.
Roll the deformation trace of core roller and controlled by the V-shaped line slideway, connected by spacing mandrel between them.Workpiece passes in and out from moving spacing mandrel and rolling between the core roller.Rolling core roller, rolling wheel and driving wheel adopts mould steel to make.
Cooling body consists of cooling tube (18), oil pump (19), cooling oil groove (20); Oil pump (19) in cooling oil groove (20) is connected to by by the bearing component of cold roll by cooling tube (18).When opening the hydraulic thrust system, cooling oil pump is started to cooling workpiece, rolling wheel and rolls core.
Cylindrical moulding determinator (17) is configured to propping up by the dial gauge of measuring the excircle of workpiece wall thickness, and dial gauge is fixed on frame by support, also can be arranged to travel switch or light controlling device.
The device of this processing positive displacement drill bearing also can be arranged to horizontal, and an end is set to propulsive mechanism level connection joint excircle of workpiece roller-compaction mechanism; The other end is set to driving wheel and the secondary driving wheel of rotating mechanism, is provided with the workpiece inner circle shaping mechanism that can move horizontally between it; Propulsive mechanism and rotating mechanism are fixed on base, the core roller that rolls of the rolling wheel of excircle of workpiece roller-compaction mechanism and workpiece inner circle shaping mechanism is fixed on the horizontal guide rail of base, cold roll to the workpiece bearing blank is provided with cooling body, and bearing component blank one side is provided with the cylindrical moulding and measures system.
Drive condition: 1. hydraulic jack is exported the pressure of 8-50 ton.2. motor drives and rolls core roller rotating speed at 80-500r/min.3. lubricated with rolling oil cooling.4. adjust the cylindrical controller.
Cold roll 55SiMoVA positive displacement drill bearing inner sleeve:
Cold roll drilling tool bearing outside: preparation: installation mold at first: first install cold roll bearing outside mould-rolling wheel, roll the core roller, rolling wheel is arranged on lining, rolls the core roller and is arranged on spacing mandrel.
The bearing external sleeve blank is installed again, by the bearing outside blank that processes by mobile spacing core sleeve in the position of rolling of rolling core roller forming tank, adjust mobile spacing mandrel, the bearing outside blank that makes to roll on the core roller is corresponding with the forming tank on rolling wheel.
During work, hydraulic jack (1) and motor (16) driving bearing overcoat rolling wheel, driving wheel (12) and bearing outside respectively roll the core roller.Motor via reducer drives driving wheel by shaft coupling and secondary driving wheel rotates, hydraulic jack promotes the rolling wheel mandrel of c shape framework to bottom offset by push rod simultaneously, the bearing outside blank cylindrical overlapped on making the outer bearing outside mould-rolling wheel arranged of the roller bearing installed on the rolling wheel mandrel and rolling the core roller contacts, the forming tank of cold roll bearing outside mould-rolling wheel is blocked the bearing outside blank, bearing outside blank inner circle contacts with rolling the core roller, and the forming tank rolled on the core roller is blocked bearing outside blank inner circle.The core roller that rolls of bearing outside blank both sides contacts with secondary driving wheel with driving wheel by the V-type line slideway, rotation drive by driving wheel and secondary driving wheel rolls the rotation of core roller, and the cylindrical of bearing outside blank rotates and drives cold roll bearing outside mould-rolling wheel rotation simultaneously.Make 55S iMoVA bearing outside blank two R raceway grooves, cylindrical, inner circle, height and chamfering of moulding bearing outside successively from reset condition by rolling compaction.
In like manner, cold roll drilling tool bearing inner sleeve: first install cold roll bearing inner sleeve mould-rolling wheel, roll the core roller, rolling wheel is arranged on lining, rolls the core roller and is arranged on spacing mandrel.
The bearing inner sleeve blank is installed again, by the bearing inner sleeve blank that processes by mobile spacing core sleeve in the position of rolling of rolling core roller forming tank, adjust mobile spacing mandrel, the bearing inner sleeve blank that makes to roll on the core roller is corresponding with the forming tank on rolling wheel.
During work, hydraulic jack and motor driving bearing inner sleeve rolling wheel, driving wheel (12) and bearing inner sleeve respectively roll the core roller, to 55SiMoVA bearing inner sleeve blank two R raceway grooves, cylindrical, inner circle, height and chamfering of moulding bearing inner sleeve successively from reset condition.
Claims (10)
1. the method for a processing positive displacement drill bearing is characterized in that: be to adopt cold rolling processes positive displacement drill bearing, its step is as follows:
1), external sleeve blank or the inner sleeve blank of machining bearing: adopt the strong material 55SiMoVA round steel of plasticity, diameter is at Φ 60mm-Φ 140mm; Round steel is calculated to length according to the model of drilling tool bearing and with sawing machine, be cut into segment, again it is put into to the stove the inside and is heated to 500 to 700 degree, then take out with pneumatic hammer and be forged into ring-type, again with staving press by inner circle or outer rounding footpath, and the height of inner circle or cylindrical expands bearing outside blank (22a) or the bearing inner sleeve blank (22b) of setting size to, the overcoat external diameter of model of the same race and inner sleeve external diameter be than old-fashioned little 8%-30%, few 30%-50% that weight ratio is old-fashioned; Supporting drilling tool bearing designation is:
The heavy 2.61-4.00KG of the material of 244 type overcoats; The heavy 1.72-2.76KG of the material of inner sleeve;
The heavy 1.45-2.38KG of the material of 215 type overcoats; The heavy 1.20-2.04KG of the material of inner sleeve;
The heavy 1.31-2.18KG of the material of 203 type overcoats; The heavy 0.99-1.74KG of the material of inner sleeve;
The heavy 1.41-2.20KG of the material of 197 type overcoats; The heavy 0.92-1.64KG of the material of inner sleeve;
The heavy 0.95-1.68KG of the material of 172 type overcoats; The heavy 0.65-1.26KG of the material of inner sleeve;
The heavy 0.88-1.59KG of the material of 165 type overcoats; The heavy 0.60-1.19KG of the material of inner sleeve;
The heavy 0.30-0.77KG of the material of 120 type overcoats; The heavy 0.22-0.51KG of the material of inner sleeve;
2), cold rolling positive displacement drill bearing: at normal temperatures and pressures, hydraulic jack (1) promotion roll milling wheel (7) moves down with the upper bearing outside blank (22a) of placing of rolling core roller (10) or bearing inner sleeve blank (22b) and exerts pressure and contact, guarantee roll milling wheel (7) and rolling core roller (10) central axes, and rolling core roller (10) is moved down by the sliding iron (8) of the V-type line slideway of both sides, contact with the driving wheel (12) of rotating mechanism; The shaft coupling (14) that motor (16) connects by reductor (15) drives driving wheel (12) and secondary driving wheel (13) makes rolling core roller (10) rotation, rolling core roller (10) by and bearing outside blank (22a) or bearing inner sleeve blank (22b) between frictional force drive bearing outside blank (22a) or bearing inner sleeve blank (22b) rotates, the friction between bearing outside blank (22a) or bearing inner sleeve blank (22b) and roll milling wheel (7) drives again roll milling wheel (7) and rotates; Simultaneously under the promotion of feed system, roll milling wheel (7) is by exerting pressure continuously to bearing outside blank (22a) or bearing inner sleeve blank (22b), centre-to-centre spacing between rolling core roller (10) and roll milling wheel (7) is dwindled gradually, finish until distortion reaches cylindrical moulding standard; Through the workpiece of spreading distortion, it is large that external diameter becomes, and wall thickness reduces, axially broadening slightly;
A. cold rolling drilling tool bearing outside: installation mold at first: the mould that first installs cold rolling bearing outside: bearing outside roll milling wheel, bearing outside rolling core roller, the bearing outside roll milling wheel is arranged on lining, the bearing outside rolling core roller is arranged on spacing mandrel, the bearing external sleeve blank is installed again, the bearing outside blank processed is passed through to the spreading position of mobile spacing core sleeve in bearing outside rolling core roller forming tank, adjust mobile spacing mandrel, make the bearing outside blank on the bearing outside rolling core roller corresponding with the forming tank on the bearing outside roll milling wheel, motor via reducer also drives driving wheel and the rotation of secondary driving wheel by the shaft coupling be connected with reductor, hydraulic jack promotes the roll milling wheel mandrel of c shape framework to bottom offset by push rod simultaneously, the bearing outside roll milling wheel arranged on the roller bearing external bushing that makes to install on the roll milling wheel mandrel contacts with the bearing outside blank cylindrical overlapped on the bearing outside rolling core roller, rotation by driving wheel and secondary driving wheel drives the rotation of bearing outside rolling core roller, the cylindrical of bearing outside blank rotates the bearing outside roll milling wheel rotation that drives cold rolling simultaneously, to 55SiMoVA bearing outside blank from the reset condition double channel of moulding bearing outside next time, cylindrical, inner circle, height and chamfering,
B. cold rolling drilling tool bearing inner sleeve: the mould that first installs cold rolling bearing inner sleeve: bearing inner sleeve roll milling wheel, bearing inner sleeve rolling core roller, the bearing inner sleeve roll milling wheel is arranged on lining, and the bearing inner sleeve rolling core roller is arranged on spacing mandrel, the bearing inner sleeve blank is installed again, the bearing inner sleeve blank processed is passed through to the spreading position of mobile spacing core sleeve in bearing inner sleeve rolling core roller forming tank, adjust mobile spacing mandrel, make the bearing inner sleeve blank on the bearing inner sleeve rolling core roller corresponding with the forming tank on rolling over the bearing inner sleeve roll milling wheel, motor via reducer also drives driving wheel and the rotation of secondary driving wheel by the shaft coupling be connected with reductor, hydraulic jack promotes the roll milling wheel mandrel of c shape framework to bottom offset by push rod simultaneously, the bearing outside roll milling wheel arranged on the roller bearing external bushing that makes to install on the roll milling wheel mandrel contacts with the bearing inner sleeve blank cylindrical overlapped on the bearing inner sleeve rolling core roller, rotation by driving wheel and secondary driving wheel drives the rotation of bearing inner sleeve rolling core roller, the cylindrical of bearing inner sleeve blank rotates the bearing inner sleeve roll milling wheel rotation that drives cold rolling simultaneously, to 55SiMoVA bearing inner sleeve blank from the reset condition double channel of moulding bearing inner sleeve next time, cylindrical, inner circle, height and chamfering.
2. implement the claims the device of a kind of processing positive displacement drill bearing of 1 described method, it is characterized in that: device has propulsive mechanism, excircle of workpiece rolling formation mechanism, workpiece inner circle shaping mechanism, rotating mechanism, cooling body and frame; Frame is doorframe shape, and the propulsive mechanism that upper rack arranges connects the excircle of workpiece rolling formation mechanism, and propulsive mechanism consists of by push rod (2) screwed connection c shape framework (3) the hydraulic jack (1) be fixed on frame; Be provided with a workpiece inner circle shaping mechanism moving up and down on the both sides V-type guiding rail mechanism of central rack; The bearing outside blank arranged on the forming tank of the rolling core roller (10) of workpiece inner circle shaping mechanism or bearing inner sleeve blank contact with the forming tank of the roll milling wheel (7) of the excircle of workpiece rolling formation mechanism moved down; Rolling core roller (10) roll surface of bearing outside blank or bearing inner sleeve blank both sides contacts with driving wheel (12) and the secondary driving wheel (13) of the rotating mechanism that frame lower arranges; Excircle of workpiece rolling formation mechanism and workpiece inner circle shaping mechanism are provided with cooling body to the cold rolling of bearing outside blank or bearing inner sleeve blank, and the downside of bearing outside blank or bearing inner sleeve blank is provided with cylindrical moulding determinator.
3. the device of a kind of processing positive displacement drill bearing according to claim 2, it is characterized in that: c shape framework consists of by bolt (21) connecting mandrel fixed head (27) respectively the two ends of pressure plate (26), and pressure plate (26) center is provided with the silk hole that connects push rod (2); Push rod (2) or be set to bulb, c shape framework pressure plate (26) centre bore or be corresponding sphere hole thoroughly, insert the push rod (2) in sphere hole, outer the putting of push rod (2) is provided with fixed head (28), and fixed head (28) is bolted on pressure plate; C shape framework also can be cast and to be integrated.
4. the device of a kind of processing positive displacement drill bearing according to claim 2, it is characterized in that: rotating mechanism consists of motor (16), reductor (15), driving wheel, secondary driving wheel, connect reductor (15) by motor (16), reductor is connected with driving wheel (12) ring flange axle by shaft coupling (14), and driving wheel (12) ring flange axle is arranged on self-aligning roller bearing fixing on frame (4b); By screwed connection, and fixing by pin (25) between the wheel shaft of driving wheel and secondary driving wheel; The outer flange dish (24) of driving wheel and secondary driving wheel is fixedly connected with by screw (21) respectively, and secondary driving wheel (13) ring flange axle is fixed on the self-aligning roller bearing (4b) of frame.
5. the device of a kind of processing positive displacement drill bearing according to claim 2, it is characterized in that: the V-type guiding rail mechanism consists of sliding rail (8), back-moving spring (29) and guide rail, the sliding rail center is fixed with spacing mandrel (9), sliding rail (8) both sides are V-shaped to be contacted with V-type rail, and V-type rail is fixed on frame; Sliding rail (8) lower end is provided with back-moving spring (29).
6. the device of a kind of processing positive displacement drill bearing according to claim 2, it is characterized in that: the excircle of workpiece rolling formation mechanism consists of roll milling wheel mandrel (5), bearing, roll milling wheel (7), roll milling wheel mandrel (5) is fixed on two mandrel fixed heads (27) of c shape framework, and fixing by locking nut (6); Be provided with two cover self-aligning thrust roller bearings (4a) on the roll milling wheel mandrel, on two cover self-aligning thrust roller bearings, be provided with a lining (23), the lining overcoat has roll milling wheel (7), and is fixed by locking nut;
Be provided with the cylindrical forming tank of bearing outside or the cylindrical forming tank of bearing inner sleeve in the middle of roll milling wheel (7) cylindrical;
The cylindrical forming tank of described bearing outside, comprise: the external diameter moulding position (Φ 1) of the height moulding position (h) of bearing outside, bearing outside and the chamfering moulding position (α) of bearing outside, chamfering moulding position (α) is right angle or arc angle;
The cylindrical forming tank of described bearing inner sleeve comprises: the external diameter moulding position (Φ 1) of the height moulding position (h) of bearing inner sleeve, bearing inner sleeve, the double channel moulding position (R) of bearing inner sleeve.
7. the device of a kind of processing positive displacement drill bearing according to claim 2, it is characterized in that: workpiece inner circle shaping mechanism consists of rolling core roller (10) and spacing mandrel (9), the two cover ball bearings (11) that arrange in the axis hole of rolling core roller (10) two ends are connected and fixed respectively spacing mandrel (9) and mobile spacing mandrel, and the other end of fixing spacing mandrel and mobile spacing mandrel is fastened on respectively on the sliding rail (8) of V-type line slideway of central rack both sides setting;
Be provided with the inner circle forming tank of bearing outside or the inner circle forming tank of bearing inner sleeve in the middle of rolling core roller (10);
The inner circle forming tank of described bearing outside comprises: the internal diameter moulding position (Φ 2) of the double channel moulding position (R) of the inner circle of bearing outside, bearing outside;
The inner circle forming tank of described bearing inner sleeve comprises: the internal diameter moulding position (Φ 2) of bearing inner sleeve and the chamfering moulding position (α) of bearing inner sleeve, chamfering moulding position (α) is right angle or arc angle.
8. the device of a kind of processing positive displacement drill bearing according to claim 2 is characterized in that: cooling body consists of cooling tube (18), oil pump (19), cooling oil groove (20); Oil pump (19) in cooling oil groove (20) connects by cooling tube (18), and the end of cooling tube (18) is located at by by the bearing outside blank of cold rolling or bearing inner sleeve blank.
9. the device of a kind of processing positive displacement drill bearing according to claim 2, it is characterized in that: cylindrical moulding determinator (17) is configured to propping up by the dial gauge of measuring the excircle of workpiece wall thickness, dial gauge is fixed on frame by support, and cylindrical moulding determinator (17) also can be arranged to travel switch or light controlling device.
10. the device of a kind of processing positive displacement drill bearing according to claim 2, it is characterized in that: the device of this processing positive displacement drill bearing also can be arranged to horizontal, and an end is set to hydraulic jack level connection joint excircle of workpiece rolling formation mechanism; The other end is set to driving wheel and the secondary driving wheel of rotating mechanism, is provided with the workpiece inner circle shaping mechanism that can move horizontally between excircle of workpiece rolling formation mechanism and driving wheel and secondary driving wheel; Hydraulic jack and rotating mechanism are fixed on frame, the rolling core roller of the roll milling wheel of excircle of workpiece rolling formation mechanism and workpiece inner circle shaping mechanism moves along the horizontal guide rail direction that is fixed on frame, cold rolling to bearing outside blank or bearing inner sleeve blank, and being provided with cooling body, a side of bearing outside blank or bearing inner sleeve blank is provided with cylindrical moulding determinator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100500562A CN101293316B (en) | 2008-06-13 | 2008-06-13 | Method and apparatus for processing positive displacement drill bearing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100500562A CN101293316B (en) | 2008-06-13 | 2008-06-13 | Method and apparatus for processing positive displacement drill bearing |
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| CN101293316A CN101293316A (en) | 2008-10-29 |
| CN101293316B true CN101293316B (en) | 2013-12-18 |
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| CN102319999B (en) * | 2011-06-20 | 2012-12-26 | 安徽省小小科技实业有限责任公司 | Precision hot rolling extrusion milling machine for belt pulley |
| CN104498687B (en) * | 2014-11-28 | 2016-08-17 | 陈祖均 | A kind of steel device and forging and smelting technique thereof |
| CN107971704A (en) * | 2017-11-24 | 2018-05-01 | 无锡龙筠模具制造有限公司 | A kind of hard material sliding block pin hole matches somebody with somebody manual labour skill |
| CN108080883B (en) * | 2018-02-07 | 2023-12-19 | 惠州市博正兴实业有限公司 | Novel outer diameter extruding cutter and assembling method thereof |
| CN111992651A (en) * | 2020-06-11 | 2020-11-27 | 无锡隆迪精密锻件有限公司 | Profiling mold of wheel forging and production process |
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