CN204220880U - A kind of taper roller four station precise forming system - Google Patents

Abstract

The utility model relates to a kind of taper roller four station precise forming system, comprise cold headers body, adopt bearing steel disk wire rod, be sent in cold headers body by feed mechanism after alignment and carry out upsetting pressure, it is characterized in that: described cold headers body is provided with a shearing blanking station and four extrusion positions, these four extrusion positions are followed successively by the first extrusion position, second extrusion position, 3rd extrusion position and the 4th extrusion position, described bearing roller is respectively by shearing blanking station by wire rod, first, two, three, after four extrusion positions, upsetting pressure is shaping, wherein wire rod obtains stock through shearing blanking station, stock is through first, two, three, upsetting part A is become by upsetting pressure successively after four extruding works, upsetting part B, upsetting part C and upsetting part D.The utility model has the advantage of: use this equipment, make upsetting part after upsetting pressure in appearance very close to final product, production efficiency improves more than 50-100%, and the precision of product is high.

Description

A kind of taper roller four station precise forming system

Technical field

The utility model relates to a kind of taper roller four station precise forming system, is a kind of taper roller four station precise forming system that can improve production efficiency specifically.

Background technology

Bearing roller is the important component part of bearing, and have taper roller, spherical roller, cylindrical roller etc., it is widely used in all kinds of machinery, has especially and apply more widely in automotive axle, wheel hub.

As shown in Figure 1, conically, the two ends up and down of its circular cone are respectively large end 1 and small end 2 to taper roller, and the end face of its large end 1 and the end face of small end 2 are respectively arranged with large chamfer A4, little chamfer A5, and are also provided with pit 3 on the end face of large end 1.

The patent No. is the utility model patent of CN 103710509 A, a manufacture method for EMU Special precision taper roller, comprise multistation high-speed cold-heading molding, hot acid washed, stress relief annealing, front cleaning, Quenching Treatment, cold treatment, first time tempering, grinding, magnetic powder inspection, superfinishing, cleaning, outward appearance, product inspection, size separation, sampling observation surface quality, oiling and counting packaging process; The cold pier of described multistation high-speed shaping employing four station Balance mechanism.

Do not meet the equipment of the multistation high-speed cold-heading molding in above-mentioned patented method at present.

Utility model content

The technical problems to be solved in the utility model is to provide a kind of taper roller four station precise forming system that can improve product percent of pass and strengthen pier compression mould service life.

For solving the problems of the technologies described above, the technical solution of the utility model is: a kind of taper roller four station precise forming system, comprise cold headers body, adopt bearing steel disk wire rod, be sent in cold headers body by feed mechanism after alignment and carry out upsetting pressure, its innovative point is: described cold headers body is provided with a shearing blanking station and four extrusion positions, these four extrusion positions are followed successively by the first extrusion position, second extrusion position, 3rd extrusion position and the 4th extrusion position, described bearing roller is respectively by shearing blanking station by wire rod, first, two, three, after four extrusion positions, upsetting pressure is shaping, wherein wire rod obtains stock through shearing blanking station, stock is through first, two, three, upsetting part A is become by upsetting pressure successively after four extruding works, upsetting part B, upsetting part C and upsetting part D.

Further, described shearing blanking station comprises dead knife cutter hub, movable knife cutter hub and buting iron, and wire rod is sent between dead knife cutter hub, movable knife cutter hub and buting iron by feed mechanism, is sheared by movable knife cutter hub;

Described dead knife cutter hub, movable knife cutter hub and buting iron set gradually along the direction of propulsion of wire rod, described movable knife cutter hub is made up of shell A and mold core A, described dead knife cutter hub is made up of shell B and mold core B, the mold core B of this dead knife cutter hub and the mold core A of described movable knife cutter hub and described wire rod suitable, described movable knife cutter hub is coaxially arranged on above described dead knife cutter hub; On the moving direction of wire rod, leave gap at the lower surface of movable knife cutter hub and the upper surface of dead knife cutter hub, and movable knife cutter hub coordinates with dead knife cutter hub the working face sheared to be two symmetrical outer arcuate faces;

Described wire rod cuts into stock by the cooperation of dead knife cutter hub, movable knife cutter hub and buting iron.

Further, the lower surface of movable knife cutter hub and the upper surface of dead knife cutter hub are on the moving direction of wire rod, and this gap is 0.15mm-0.25mm.

Further, the angle of described outer arcuate face and horizontal plane is 1.5 °-2.5 °.

Further, described first extrusion position is shaping station, and its pier compression mould A comprises master cylinder A, the A that takes blame for others, Upper Die-sleeve A and lower die-sleeve A,

Be provided with upper punch A in described Upper Die-sleeve A, described upper punch A drives it to move up and down by the master cylinder A being arranged on upper sliding sleeve A top; Described upper punch A is followed successively by stressed section of A, guide section A and punch section A from top to bottom, sealing ring A is provided with between the two ends up and down of described guide section A and Upper Die-sleeve A, be provided with the changeover portion A with truncated cone between described punch section A and guide section A, and the outside of changeover portion A is arc;

In described lower die-sleeve A, former A and undershoot A is installed, the upper port A of described former A and lower port A is respectively just to described upper punch A and undershoot A, this former A has the negative impression A of an accommodation stock, described undershoot A supports the bottom into described negative impression A, the inwall at the upper port A place of former A is also provided with the chamfering A of enlarging, and described undershoot A drives it to move up and down in negative impression A by the A that takes blame for others be arranged on bottom lower die-sleeve A;

The punch section A of described upper punch A is cylindrical, and the part of described undershoot A in negative impression A is all cylindrical, and described negative impression A is cylindrical, is coordinated by upper punch A, undershoot A and former A, makes the stock upsetting pressure in negative impression A become upsetting part A.

Further, described second extrusion position is large end pit and the little chamfer station of being shaped, and its pier compression mould B comprises master cylinder B, the B that takes blame for others, Upper Die-sleeve B and lower die-sleeve B,

Be provided with upper punch B in described Upper Die-sleeve B, described upper punch B drives it to move up and down by the master cylinder B being arranged on Upper Die-sleeve B top; Described upper punch B is followed successively by stressed section of B, guide section B and punch section B from top to bottom, is provided with sealing ring B between the two ends up and down of described guide section B and Upper Die-sleeve B; Between punch section B and guide section B, be also provided with the changeover portion B with truncated cone, and the outside of changeover portion B is arc;

In described lower die-sleeve B, former B and undershoot B is installed; The upper port B of described former B and lower port B is respectively just to upper punch B and undershoot B, and this former B has the negative impression B of an accommodation upsetting part A, and described undershoot B supports the bottom into described negative impression B; The inwall at the upper port B place of former B is also provided with the chamfering B of enlarging, and described undershoot B drives it to move up and down in negative impression B by the B that takes blame for others be arranged on bottom lower die-sleeve B;

The bottom of described punch section B has the convex body B making upsetting part A shaping large end pit; The bottom of described negative impression B has makes upsetting part A be shaped the cascaded surface A of little chamfer, and described undershoot B is against in the negative impression B of the lower end of cascaded surface A, is coordinated by upper punch B, undershoot B and former B, makes the upsetting part A upsetting pressure in negative impression B become upsetting part B.

Further, described 3rd extrusion position is the large chamfer station that is shaped, and its pier compression mould C comprises master cylinder C, the C that takes blame for others, Upper Die-sleeve C and lower die-sleeve C,

Be provided with upper punch C in described Upper Die-sleeve C and upper outsidely rush C, the described upper outside C of punching and upper punch C is successively set in described Upper Die-sleeve C from outside to inside in Upper Die-sleeve C, and described upper punch C and the upper outside C of punching drives it to move up and down by the master cylinder C being arranged on Upper Die-sleeve C top; The top of described upper punch C is connected with the piston rod C of described master cylinder C, and above piston rod C, also arrange an elastic buffer block A, make upper punch C can with the upper outside inwall floating fit rushing C;

In described lower die-sleeve C, former C and undershoot C is installed; The upper port C of described former C and lower port C is respectively just to upper punch C and undershoot C, and this former C has the negative impression C of an accommodation upsetting part B, and described undershoot C supports the bottom into described negative impression C; Described undershoot C drives it to move up and down in negative impression C by the C that takes blame for others be arranged on bottom lower die-sleeve C; One elastic buffer block B is also set in the bottom of former C, makes former C and Upper Die-sleeve C inner arm floating fit;

The bottom of the described upper outside C of punching has makes upsetting part B be shaped the cascaded surface B of large chamfer, described upper punch C is against the upper outside of the upper end of cascaded surface B and rushes in C, the bottom of described former C has the cascaded surface C suitable with the little chamfer of upsetting part B, the lower end of described negative impression C has by upper punch C, upper outsidely rushes C, undershoot C and former C coordinates, and makes the upsetting part B upsetting pressure in negative impression C become upsetting part C.

Further, described 4th extrusion position is forming station, and its pier compression mould D comprises master cylinder D, the D that takes blame for others, Upper Die-sleeve D and lower die-sleeve D,

Be provided with upper punch D in described Upper Die-sleeve D and upper outsidely rush D, the described upper outside D of punching and upper punch D is successively set in described Upper Die-sleeve D from outside to inside in Upper Die-sleeve D, and described upper punch D and the upper outside D of punching drives it to move up and down by the master cylinder D being arranged on upper sliding sleeve D top; The top of described upper punch D is connected with the piston rod D of described master cylinder D, and above piston rod D, arrange an elastic buffer block C, make upper punch D can with the upper outside inwall floating fit rushing D;

In described lower die-sleeve D, former D and undershoot D is installed; The upper port D of described former D and lower port D is respectively just to upper punch D and undershoot D, and this former D has the negative impression D of an accommodation upsetting part C, and described undershoot D supports the bottom into described negative impression D; Described undershoot D drives it to move up and down in negative impression D by the D that takes blame for others be arranged on bottom lower die-sleeve D;

The bottom of the described upper outside D of punching has the cascaded surface D suitable with the large chamfer of upsetting part C, and described upper punch D is against the upper end of cascaded surface C; The bottom of described former D has the cascaded surface E suitable with the little chamfer of upsetting part B, and described undershoot D is against the lower end of cascaded surface E; Described negative impression D is truncated cone; By upper punch D, upper outsidely rush D, undershoot D and former D coordinates, make the upsetting part B upsetting pressure in negative impression C become upsetting part D.

Further, described elastic buffer block A, elastic buffer block B and elastic buffer block C are spring.

The utility model has the advantage of: 1. cold headers body described in is provided with a shearing blanking station and four extrusion positions, described bearing roller is respectively by shearing blanking station by wire rod, first, two, three, after four extrusion positions, upsetting pressure is shaping, upsetting part in appearance very close to final product after its upsetting pressure, and its dimensional accuracy can ensure within 0.02mm, within roller substance can be as accurate as 0.1g, can realize the direct heat treatment of forging completely, cancel the front decyclization of quenching, optical crosstalk, the all process steps such as buffing, if the decarburization that may cause in material self and heat treatment process, the situation such as to damage all can ensure, its grinding allowance can be compressed to the limit, after quenching, each concerned process steps of mill processing all can once complete, production efficiency improves more than 50-100%, and the precision of product is high, 2. the lower surface of the movable knife cutter hub in shearing blanking station and the upper surface of dead knife cutter hub leave gap on the moving direction of wire rod, make the material that the blank end face shearing has a fritter unnecessary, make up the deficiency of cylindrical material with this material, can prevent simultaneously movable knife in transport process with wire rod friction and produce material end face and burn, 3. the lower surface of movable knife cutter hub described in and the upper surface of dead knife cutter hub are on the moving direction of wire rod, and this gap is 0.15mm-0.25mm, make to forge and press the product percent of pass obtained and reach 99% within the scope of this, 4. upper movable knife cutter hub described in coordinates the working face sheared to be two symmetrical outer arcuate faces with lower dead knife cutter hub, make the stock flatness after shearing high, and tool setting can not have damage, enhance cutting-tool's used life, 5. described in, the angle of outer arcuate face and horizontal plane is 1.5 °-2.5 °, makes the stock quality sheared better, improves the qualification rate of product after upsetting pressure, 6. the pier compression mould A in the first extrusion position, carries out upsetting pressure to the stock in negative impression A by upper punch A and undershoot A simultaneously, realizes the shaping to stock, sealing ring A is provided with between the two ends up and down of the guide section A of described upper punch A and Upper Die-sleeve A, and the inwall of the opening part of negative impression A is provided with the rounded corners A of enlarging, can just in negative impression A when making upper punch A descending, the changeover portion A with truncated cone is provided with between the punch section A of described upper punch A and guide section A, and the outside of changeover portion A is arc, when this changeover portion A makes punching press, force side A uniform force, improves the qualification rate of product after upsetting pressure, 7. the pier compression mould B in the second extrusion position, carries out upsetting pressure to the upsetting part A in negative impression B by upper punch B and undershoot B simultaneously, upsetting part A is shaped and holds pit and little chamfer greatly, sealing ring B is provided with between the two ends up and down of the guide section B of described upper punch B and Upper Die-sleeve B, and the inwall of the opening part of negative impression B is provided with the rounded corners B of enlarging, can just in negative impression B when making upper punch B descending, the changeover portion B with truncated cone is provided with between the punch section B of described upper punch B and guide section B, and the outside of changeover portion B is arc, when this changeover portion B makes punching press, force side B uniform force, improves the qualification rate of product after upsetting pressure, 8. the pier compression mould C of the 3rd extrusion position, carries out upsetting pressure by upper punch C, the upper outside C of punching and undershoot C to the upsetting part B in negative impression C, and upsetting part B is shaped large chamfer, the top of described upper punch C is connected with the piston rod C of described master cylinder C, and an elastic buffer block A is also set above piston rod C, make upper punch C can with the upper outside inwall floating fit rushing C, when preventing upper punch C up, upsetting part C sticks on upper punch C, and Upper Die-sleeve C is when being separated with lower die-sleeve C, this elastic buffer block A has rebound effect, one elastic buffer block B is also set in the bottom of former C, makes former C and Upper Die-sleeve C inner arm floating fit, make upper punch C and undershoot C form an enclosure space, upsetting part B when shaping without flash and chamfering is evenly full, 9. the pier compression mould D of the 4th extrusion position, carries out upsetting pressure by upper punch D, the upper outside D of punching and undershoot D to the upsetting part C in negative impression D, and upsetting part C is shaped large chamfer, the top of described upper punch D is connected with the piston rod D of described master cylinder D, and an elastic buffer block D is also set above piston rod D, make upper punch D can with the upper outside inwall floating fit rushing D, when preventing upper punch D up, upsetting part D sticks on upper punch D, and Upper Die-sleeve D is when being separated with lower die-sleeve D, this elastic buffer block A has rebound effect, 10. elastic buffer block A, elastic buffer block B described in and elastic buffer block C are spring, and its structure is simple.

Accompanying drawing explanation

Fig. 1 is the structural representation of circular cone roller.

Fig. 2 is each station workpiece figure of a kind of bearing roller precise forming cold-heading equipment of the present utility model.

Fig. 3 is the mould structure schematic diagram of the shearing blanking station of a kind of bearing roller precise forming cold-heading equipment of the present utility model.

Fig. 4 is the enlarged drawing in the A portion of Fig. 3.

Fig. 5 is the upsetting pressure mould structure schematic diagram of the first extrusion position of a kind of bearing roller precise forming cold-heading equipment of the present utility model.

Fig. 6 is the enlarged drawing in the B portion of Fig. 5.

Fig. 7 is the upsetting pressure mould structure schematic diagram of the second extrusion position of a kind of bearing roller precise forming cold-heading equipment of the present utility model.

Fig. 8 is the enlarged drawing in the C portion of Fig. 7.

Fig. 9 is the upsetting pressure mould structure schematic diagram of the 3rd extrusion position of a kind of bearing roller precise forming cold-heading equipment of the present utility model.

Figure 10 is the enlarged drawing in the D portion of Fig. 9.

Figure 11 is the upsetting pressure mould structure schematic diagram of the 4th extrusion position of a kind of bearing roller precise forming cold-heading equipment of the present utility model.

Figure 12 is the enlarged drawing in the E portion of Figure 11.

Detailed description of the invention

Embodiment 1

As shown in Figure 2, a kind of taper roller four station of the utility model precise forming system, comprise cold headers body, adopt bearing steel disk wire rod 6, be sent in cold headers body by feed mechanism after alignment and carry out upsetting pressure, cold headers body is provided with a shearing blanking station and four extrusion positions, these four extrusion positions are followed successively by the first extrusion position, second extrusion position, 3rd extrusion position and the 4th extrusion position, described bearing roller is respectively by shearing blanking station by wire rod, first, two, three, after four extrusion positions, upsetting pressure is shaping, wherein wire rod obtains stock 7 through shearing blanking station, stock is through first, two, three, upsetting part A8 is become by upsetting pressure successively after four extruding works, upsetting part B9, upsetting part C10 and upsetting part D11.

As shown in Figure 3 and Figure 4, above-mentioned shearing blanking station comprises dead knife cutter hub, movable knife cutter hub and buting iron 12, and wire rod 6 is sent between dead knife cutter hub, movable knife cutter hub and buting iron 12 by feed mechanism, is sheared by movable knife cutter hub;

Above-mentioned dead knife cutter hub, movable knife cutter hub and buting iron 12 set gradually along the direction of propulsion of wire rod 6, movable knife cutter hub is made up of shell A13 and mold core A 14, dead knife cutter hub is made up of shell B15 and mold core B 16, the mold core A 14 of the mold core B of this dead knife cutter hub and movable knife cutter hub is suitable with wire rod 6, and movable knife cutter hub is coaxially arranged on above dead knife cutter hub; On the moving direction of wire rod 6, leave gap H at the lower surface of movable knife cutter hub and the upper surface of dead knife cutter hub, and movable knife cutter hub coordinates with dead knife cutter hub the working face sheared to be two symmetrical outer arcuate face b;

Wire rod 6 cuts into stock 7 by the cooperation of dead knife cutter hub, movable knife cutter hub and buting iron 12.

In the present embodiment, gap H is 0.15mm-0.25mm, and the angle of outer arcuate face b and horizontal plane is 1.5 °-2.5 °;

As shown in Figure 5 and Figure 6, above-mentioned first extrusion position is shaping station, and its pier compression mould A comprises master cylinder A, the A that takes blame for others, Upper Die-sleeve A17 and lower die-sleeve A18,

Be provided with upper punch A19 in Upper Die-sleeve A17, upper punch A19 drives it to move up and down by the master cylinder A being arranged on upper sliding sleeve 17 top; Upper punch A19 is followed successively by stressed section of A20, guide section A21 and punch section A22 from top to bottom, sealing ring A23 is provided with between the two ends up and down of guide section A21 and Upper Die-sleeve A, be provided with the changeover portion A24 with truncated cone between punch section A22 and guide section A21, and the outside of changeover portion A24 is arc;

Former A25 and undershoot A26 is installed in lower die-sleeve A18, the upper port A of former A25 and lower port A is respectively just to upper punch A19 and undershoot A26, this former A25 has the negative impression A of an accommodation stock, undershoot A26 supports the bottom into negative impression A, the inwall at the upper port A place of former A25 is also provided with the chamfering A27 of enlarging, and undershoot A26 drives it to move up and down in negative impression A by the A that takes blame for others be arranged on bottom lower die-sleeve A18;

The punch section A22 of upper punch A19 is cylindrical, and the part of undershoot A26 in negative impression A is all cylindrical, and negative impression A is cylindrical, is coordinated by upper punch A19, undershoot A26 and former A25, makes stock 7 upsetting pressure in negative impression A become upsetting part A8;

As shown in Figure 7 and Figure 8, above-mentioned second extrusion position is large end pit and the little chamfer station of being shaped, and its pier compression mould B comprises master cylinder B, the B that takes blame for others, Upper Die-sleeve B28 and lower die-sleeve B29,

Be provided with upper punch B30 in Upper Die-sleeve B28, upper punch B30 drives it to move up and down by the master cylinder B being arranged on Upper Die-sleeve B28 top; Upper punch B30 is followed successively by stressed section of B31, guide section B32 and punch section B33 from top to bottom, is provided with sealing ring B39 between the two ends up and down of guide section B32 and Upper Die-sleeve B29; Between punch section B33 and guide section B32, be also provided with the changeover portion B34 with truncated cone, and the outside of changeover portion B34 is arc;

Former B36 and undershoot B37 is installed in lower die-sleeve B35; The upper port B of former B36 and lower port B is respectively just to upper punch B30 and undershoot B37, and this former B36 has the negative impression B of an accommodation upsetting part A8, and undershoot B37 supports the bottom into negative impression B; The inwall at the upper port B place of former B36 is also provided with the chamfering B38 of enlarging, and undershoot B37 drives it to move up and down in negative impression B by the B that takes blame for others be arranged on bottom lower die-sleeve B35;

The bottom of punch section B33 has the convex body B61 making upsetting part A8 shaping large end pit; The bottom of negative impression B has makes upsetting part A8 be shaped the cascaded surface A34 of little chamfer, and undershoot B37 is against in the negative impression B of the lower end of cascaded surface A34, is coordinated by upper punch B30, undershoot B37 and former B36, makes the upsetting part A8 upsetting pressure in negative impression B become upsetting part B9;

As shown in Figure 9 and Figure 10, above-mentioned 3rd extrusion position is the large chamfer station that is shaped, and its pier compression mould C comprises master cylinder C, the C that takes blame for others, Upper Die-sleeve C40 and Upper Die-sleeve C41,

Be provided with upper punch C42 in Upper Die-sleeve C40 and upper outsidely rush C43, the upper outside C43 of punching and upper punch C42 is successively set on from outside to inside in Upper Die-sleeve C40 in Upper Die-sleeve, and upper punch C42 and the upper outside C43 of punching drives it to move up and down by the master cylinder C being arranged on Upper Die-sleeve C40 top; The top of upper punch C42 is connected with the piston rod C of master cylinder C, and above piston rod C, also arrange an elastic buffer block A44, make upper punch C42 can with the upper outside inwall floating fit rushing C43;

Former C45 and undershoot C46 is installed in Upper Die-sleeve C41; The upper port C of former C45 and lower port C is respectively just to upper punch C42 and undershoot C46, and this former C45 has the negative impression C of an accommodation upsetting part B9, and undershoot C46 supports the bottom into negative impression C; Undershoot C46 drives it to move up and down in negative impression C by the C that takes blame for others be arranged on bottom Upper Die-sleeve C41; One elastic buffer block B47 is also set in the bottom of former C45, makes former C45 and Upper Die-sleeve C40 inner arm floating fit;

The bottom of the upper outside C43 of punching has makes upsetting part B9 be shaped the cascaded surface B49 of large chamfer, upper punch C42 is against the upper outside of the upper end of cascaded surface B49 and rushes in C43, the bottom of former C has the cascaded surface C48 suitable with the little chamfer of upsetting part B, the lower end of negative impression C has by upper punch C42, upper outsidely rushes C43, undershoot C46 and former C45 coordinates, and makes the upsetting part B9 upsetting pressure in negative impression C become upsetting part C10;

The present embodiment Elastic buffer stopper B47 and elastic buffer block A44 is spring;

As is illustrated by figs. 11 and 12, above-mentioned 4th extrusion position is forming station, and its pier compression mould D comprises master cylinder D, the D that takes blame for others, Upper Die-sleeve D50 and lower die-sleeve D51,

Be provided with upper punch D52 in Upper Die-sleeve D50 and upper outsidely rush D53, the upper outside D53 of punching and upper punch D52 is successively set on from outside to inside in Upper Die-sleeve D50 in Upper Die-sleeve D50, and upper punch D52 and the upper outside D53 of punching drives it to move up and down by the master cylinder D being arranged on upper sliding sleeve D top; The top of upper punch D52 is connected with the piston rod D of master cylinder D, and above piston rod D, arrange an elastic buffer block C54, make upper punch D52 can with the upper outside inwall floating fit rushing D53;

Former D55 and undershoot D56 is installed in lower die-sleeve D51; The upper port D of described former D55 and lower port D is respectively just to upper punch D52 and undershoot D56, and this former D55 has the negative impression D of an accommodation upsetting part C10, and described undershoot D56 supports the bottom into described negative impression D; Undershoot D56 drives it to move up and down in negative impression D by the D that takes blame for others be arranged on bottom lower die-sleeve D51;

The bottom of the upper outside D53 of punching has the cascaded surface D58 suitable with the large chamfer of upsetting part C10, and upper punch D52 is against the upper end of cascaded surface C59; The bottom of former D55 has the cascaded surface E60 suitable with the little chamfer of upsetting part B, and undershoot D56 is against the lower end of cascaded surface E; Negative impression D is truncated cone; By upper punch D52, upper outsidely rush D53, undershoot D56 and former D55 coordinates, make the upsetting part B upsetting pressure in negative impression C become upsetting part D11;

The present embodiment Elastic buffer stopper C is spring.

It is during use, wire rod is shaping respectively by upsetting pressure after shearing blanking station, first, second, third and fourth extrusion position,

Shearing blanking station: wire rod 6, is sent between dead knife cutter hub, movable knife cutter hub and buting iron 4 by feed mechanism, is sheared by movable knife cutter hub, obtain stock 7, and the stock 7 of shearing is sent to the first extrusion position by manipulator;

First extrusion position: stock 7 is at the upper port A place of negative impression A, upper punch A19 is descending, support in negative impression A by stock 7, upper punch A19 continues descending, coordinates extrude stock 7 mutually with undershoot A26, shaping is carried out to stock 7, after upsetting pressure completes, upper punch A19 is up, and undershoot A26 is up, upsetting part A8 after upsetting pressure is ejected negative impression A, finally by manipulator, upsetting part A8 is moved on to the second extrusion position;

Second extrusion position: upsetting part A8 is at the upper port B place of negative impression B, upper punch B30 is descending, support in negative impression B by upsetting part A8, upper punch B30 continues descending, coordinates extrude upsetting part A8 mutually with undershoot B37, upsetting part A8 is made to form large end pit and little chamfer, after upsetting pressure completes, upper punch B30 is up, and undershoot B37 is up, upsetting part B9 after upsetting pressure is ejected negative impression B, finally by manipulator, upsetting part B9 is moved on to the 3rd extrusion position;

3rd extrusion position: upsetting part B9 is at the upper port C place of negative impression C, upper punch C42 and upper outside to rush C43 simultaneously descending, upsetting part B9 supports in negative impression C by upper punch C42, when upper punch C42 and undershoot C46 compresses the two ends up and down of upsetting part B9 respectively, under the effect of elastic buffer block A and elastic buffer block B, upper punch C42 stops descending, the upper outside C43 that rushes continues descending, and upper punch C42 and undershoot C46 forms an enclosure space, thus upsetting part B9 is shaped large chamfer, and when being shaped without flash, large chamfer is evenly full, after upsetting pressure completes, upper punch C42 and upper outside to rush C43 simultaneously up, undershoot C46 is up, upsetting part C10 after upsetting pressure is ejected negative impression C, finally by manipulator, upsetting part C10 is moved on to the 4th extrusion position,

4th extrusion position: upsetting part C10 is at the upper port D place of negative impression D, upper punch D52 and upper outside to rush D53 simultaneously descending, upsetting part C10 supports in negative impression D by upper punch D52, when upper punch D52 and undershoot D compresses the two ends up and down of upsetting part C10 respectively, under the effect of elastic buffer block C, upper punch D52 stops descending, the upper outside D53 that rushes continues descending, thus upsetting part C10 is shaped, and after upsetting pressure completes, upper punch D52 and upper outside to rush D53 simultaneously up, undershoot D52 is up, upsetting part D11 after upsetting pressure is ejected negative impression D, and upsetting pressure terminates, and becomes upsetting part D11.

Claims (9)

1. a taper roller four station precise forming system, comprise cold headers body, adopt bearing steel disk wire rod, be sent in cold headers body by feed mechanism after alignment and carry out upsetting pressure, it is characterized in that: described cold headers body is provided with a shearing blanking station and four extrusion positions, these four extrusion positions are followed successively by the first extrusion position, second extrusion position, 3rd extrusion position and the 4th extrusion position, described bearing roller is respectively by shearing blanking station by wire rod, first, two, three, after four extrusion positions, upsetting pressure is shaping, wherein wire rod obtains stock through shearing blanking station, stock is through first, two, three, upsetting part A is become by upsetting pressure successively after four extruding works, upsetting part B, upsetting part C and upsetting part D.

2. a kind of taper roller four station precise forming system according to claim 1, it is characterized in that: described shearing blanking station comprises dead knife cutter hub, movable knife cutter hub and buting iron, wire rod is sent between dead knife cutter hub, movable knife cutter hub and buting iron by feed mechanism, is sheared by movable knife cutter hub;

Described dead knife cutter hub, movable knife cutter hub and buting iron set gradually along the direction of propulsion of wire rod, described movable knife cutter hub is made up of shell A and mold core A, described dead knife cutter hub is made up of shell B and mold core B, the mold core B of this dead knife cutter hub and the mold core A of described movable knife cutter hub and described wire rod suitable, described movable knife cutter hub is coaxially arranged on above described dead knife cutter hub; On the moving direction of wire rod, leave gap at the lower surface of movable knife cutter hub and the upper surface of dead knife cutter hub, and movable knife cutter hub coordinates with dead knife cutter hub the working face sheared to be two symmetrical outer arcuate faces;

Described wire rod cuts into stock by the cooperation of dead knife cutter hub, movable knife cutter hub and buting iron.

3. a kind of taper roller four station precise forming system according to claim 2, is characterized in that: the lower surface of movable knife cutter hub and the upper surface of dead knife cutter hub are on the moving direction of wire rod, and this gap is 0.15mm-0.25mm.

4. a kind of taper roller four station precise forming system according to claim 2, is characterized in that: the angle of described outer arcuate face and horizontal plane is 1.5 °-2.5 °.

5. a kind of taper roller four station precise forming system according to claim 1, is characterized in that: described first extrusion position is shaping station, its pier compression mould A comprises master cylinder A, the A that takes blame for others, Upper Die-sleeve A and lower die-sleeve A,

Be provided with upper punch A in described Upper Die-sleeve A, described upper punch A drives it to move up and down by the master cylinder A being arranged on upper sliding sleeve A top; Described upper punch A is followed successively by stressed section of A, guide section A and punch section A from top to bottom, sealing ring A is provided with between the two ends up and down of described guide section A and Upper Die-sleeve A, be provided with the changeover portion A with truncated cone between described punch section A and guide section A, and the outside of changeover portion A is arc;

In described lower die-sleeve A, former A and undershoot A is installed, the upper port A of described former A and lower port A is respectively just to described upper punch A and undershoot A, this former A has the negative impression A of an accommodation stock, described undershoot A supports the bottom into described negative impression A, the inwall at the upper port A place of former A is also provided with the chamfering A of enlarging, and described undershoot A drives it to move up and down in negative impression A by the A that takes blame for others be arranged on bottom lower die-sleeve A;

The punch section A of described upper punch A is cylindrical, and the part of described undershoot A in negative impression A is all cylindrical, and described negative impression A is cylindrical, is coordinated by upper punch A, undershoot A and former A, makes the stock upsetting pressure in negative impression A become upsetting part A.

6. a kind of taper roller four station precise forming system according to claim 1, is characterized in that: described second extrusion position is large end pit and the little chamfer station of being shaped, and its pier compression mould B comprises master cylinder B, the B that takes blame for others, Upper Die-sleeve B and lower die-sleeve B,

Be provided with upper punch B in described Upper Die-sleeve B, described upper punch B drives it to move up and down by the master cylinder B being arranged on Upper Die-sleeve B top; Described upper punch B is followed successively by stressed section of B, guide section B and punch section B from top to bottom, is provided with sealing ring B between the two ends up and down of described guide section B and Upper Die-sleeve B; Between punch section B and guide section B, be also provided with the changeover portion B with truncated cone, and the outside of changeover portion B is arc;

In described lower die-sleeve B, former B and undershoot B is installed; The upper port B of described former B and lower port B is respectively just to upper punch B and undershoot B, and this former B has the negative impression B of an accommodation upsetting part A, and described undershoot B supports the bottom into described negative impression B; The inwall at the upper port B place of former B is also provided with the chamfering B of enlarging, and described undershoot B drives it to move up and down in negative impression B by the B that takes blame for others be arranged on bottom lower die-sleeve B;

The bottom of described punch section B has the convex body B making upsetting part A shaping large end pit; The bottom of described negative impression B has makes upsetting part A be shaped the cascaded surface A of little chamfer, and described undershoot B is against in the negative impression B of the lower end of cascaded surface A, is coordinated by upper punch B, undershoot B and former B, makes the upsetting part A upsetting pressure in negative impression B become upsetting part B.

7. a kind of taper roller four station precise forming system according to claim 1, is characterized in that: described 3rd extrusion position is the large chamfer station that is shaped, and its pier compression mould C comprises master cylinder C, the C that takes blame for others, Upper Die-sleeve C and lower die-sleeve C,

Be provided with upper punch C in described Upper Die-sleeve C and upper outsidely rush C, the described upper outside C of punching and upper punch C is successively set in described Upper Die-sleeve C from outside to inside in Upper Die-sleeve C, and described upper punch C and the upper outside C of punching drives it to move up and down by the master cylinder C being arranged on Upper Die-sleeve C top; The top of described upper punch C is connected with the piston rod C of described master cylinder C, and above piston rod C, also arrange an elastic buffer block A, make upper punch C can with the upper outside inwall floating fit rushing C;

In described lower die-sleeve C, former C and undershoot C is installed; The upper port C of described former C and lower port C is respectively just to upper punch C and undershoot C, and this former C has the negative impression C of an accommodation upsetting part B, and described undershoot C supports the bottom into described negative impression C; Described undershoot C drives it to move up and down in negative impression C by the C that takes blame for others be arranged on bottom lower die-sleeve C; One elastic buffer block B is also set in the bottom of former C, makes former C and Upper Die-sleeve C inner arm floating fit;

The bottom of the described upper outside C of punching has makes upsetting part B be shaped the cascaded surface B of large chamfer, described upper punch C is against the upper outside of the upper end of cascaded surface B and rushes in C, the bottom of described former C has the cascaded surface C suitable with the little chamfer of upsetting part B, the lower end of described negative impression C has by upper punch C, upper outsidely rushes C, undershoot C and former C coordinates, and makes the upsetting part B upsetting pressure in negative impression C become upsetting part C.

8. a kind of taper roller four station precise forming system according to claim 1, is characterized in that: described 4th extrusion position is forming station, its pier compression mould D comprises master cylinder D, the D that takes blame for others, Upper Die-sleeve D and lower die-sleeve D,

Be provided with upper punch D in described Upper Die-sleeve D and upper outsidely rush D, the described upper outside D of punching and upper punch D is successively set in described Upper Die-sleeve D from outside to inside in Upper Die-sleeve D, and described upper punch D and the upper outside D of punching drives it to move up and down by the master cylinder D being arranged on upper sliding sleeve D top; The top of described upper punch D is connected with the piston rod D of described master cylinder D, and above piston rod D, arrange an elastic buffer block C, make upper punch D can with the upper outside inwall floating fit rushing D;

In described lower die-sleeve D, former D and undershoot D is installed; The upper port D of described former D and lower port D is respectively just to upper punch D and undershoot D, and this former D has the negative impression D of an accommodation upsetting part C, and described undershoot D supports the bottom into described negative impression D; Described undershoot D drives it to move up and down in negative impression D by the D that takes blame for others be arranged on bottom lower die-sleeve D;

The bottom of the described upper outside D of punching has the cascaded surface D suitable with the large chamfer of upsetting part C, and described upper punch D is against the upper end of cascaded surface C; The bottom of described former D has the cascaded surface E suitable with the little chamfer of upsetting part B, and described undershoot D is against the lower end of cascaded surface E; Described negative impression D is truncated cone; By upper punch D, upper outsidely rush D, undershoot D and former D coordinates, make the upsetting part B upsetting pressure in negative impression C become upsetting part D.

9. a kind of taper roller four station precise forming system according to claim 7, is characterized in that: described elastic buffer block A, elastic buffer block B and elastic buffer block C are spring.