CN112025205A - Machining and forming process of super-long non-through special-shaped shaft - Google Patents
Machining and forming process of super-long non-through special-shaped shaft Download PDFInfo
- Publication number
- CN112025205A CN112025205A CN202010635711.1A CN202010635711A CN112025205A CN 112025205 A CN112025205 A CN 112025205A CN 202010635711 A CN202010635711 A CN 202010635711A CN 112025205 A CN112025205 A CN 112025205A
- Authority
- CN
- China
- Prior art keywords
- special
- shaped shaft
- repairing
- repair
- dynamic
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/04—Repairing fractures or cracked metal parts or products, e.g. castings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a processing and forming process of an ultra-long non-through special-shaped shaft, belonging to the technical field of non-through shaft processing, and the processing and forming process of the ultra-long non-through special-shaped shaft comprises the steps of firstly increasing the radius of an arc chamfer and a die-entering angle, thereby effectively reducing the generation of micro cracks in the cold extrusion forming process, effectively improving the quality and the strength of the non-through special-shaped shaft, filling inert gas into a synchronous de-texturing punch, extruding instantaneous repair liquid by the inert gas during cold extrusion, enabling a dynamic repair layer to deform and contact with the non-through special-shaped shaft, thereby uniformly coating the instantaneous repair liquid on the inner wall of the shaft, repairing the micro cracks on the inner wall of the extruded non-through special-shaped shaft, and rapidly shaping the instantaneous repair liquid coated on the inner wall of the non-through special-shaped shaft in time after repair, thereby effectively improving the smoothness and the repair quality of the inner wall of the non-through special-, thereby reducing the later stage and carrying out the process of polishing to the inner wall, improving whole work efficiency.
Description
Technical Field
The invention relates to the technical field of processing of a non-through shaft, in particular to a processing and forming process of an overlong non-through special-shaped shaft.
Background
Cold extrusion is a process in which a metal blank is placed in a cold extrusion die cavity and pressure is applied to the blank by a male die fixed on a press machine at room temperature to plastically deform the metal blank to produce a part. China can carry out cold extrusion on metals such as lead, tin, aluminum, copper, zinc and alloy thereof, low-carbon steel, medium-carbon steel, tool steel, low-alloy steel, stainless steel and the like, and can carry out cold extrusion with a certain deformation even on bearing steel, high-carbon high-aluminum alloy tool steel, high-speed steel and the like. In the aspect of extrusion equipment, China has the capability of designing and manufacturing extrusion presses with various levels of tonnage. Besides adopting a general mechanical press, a hydraulic press and a cold extrusion machine, the cold extrusion production is also successfully carried out by adopting a friction press and high-speed high-energy equipment.
The cold extrusion forming mode is generally adopted when the special-shaped non-through shaft is machined, the general process comprises blanking, annealing, turning blank making, shot blasting, phosphorus saponification, cold extrusion forming and the like, however, in the process, when the inner wall of a forged piece subjected to extrusion is deformed under large impact force in the extrusion process, microcracks are easily generated on a stress deformation surface, the existence of the microcracks can influence the overall strength and quality reduction of the formed special-shaped non-through shaft, and the actual service life of the shaft is shortened.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide a process for processing and forming an ultra-long non-through special-shaped shaft, which firstly increases the radius of an arc chamfer and a die-entering angle, thereby effectively reducing the generation of micro cracks in the cold extrusion forming process, effectively improving the quality and the strength of the non-through special-shaped shaft, and through the use of a synchronous de-texturing punch head, in the cold extrusion process, through filling inert gas into the synchronous de-texturing punch head, the inert gas can extrude instantaneous repair liquid at the same time of cold extrusion, so that a dynamic repair layer is deformed to be contacted with the non-through special-shaped shaft, thereby uniformly coating the instantaneous repair liquid on the inner wall of the extruded non-through special-shaped shaft, repairing the micro cracks on the inner wall of the extruded non-through special-shaped shaft, and simultaneously and quickly shaping the instantaneous repair liquid coated on the inner wall of the non-through special-shaped shaft at high temperature in time, the repairing quality of the instantaneous repairing liquid to the microcracks is better, so that the smoothness of the inner wall of the special-shaped shaft which is not penetrated is effectively improved, and the influence on the smoothness of the inner wall due to the existence of the instantaneous repairing liquid is reduced.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
A machining and forming process of an overlong non-through special-shaped shaft comprises the following steps:
s1, blanking according to the required dimension of the non-through special-shaped shaft to obtain a forging coarse material;
s2, annealing the rough material of the forging;
s3, turning the annealed forge piece rough material to make a blank, and performing shot blasting phosphorus saponification treatment after the blank is made to obtain a shaft blank;
s4, controlling the temperature of the synchronous de-texturing punch to be 40-50 ℃, and simultaneously filling inert gas into the synchronous de-texturing punch during extrusion forming;
and S5, cold extrusion molding, namely extruding the shaft blank for multiple times through a synchronous thread-removing punch with high temperature and filled with inert gas until molding to obtain the non-through special-shaped shaft.
Furthermore, the hardness of the forged piece after annealing treatment is HB180-260, and the grain size is 5-8 grade.
Furthermore, the bottom surface of the synchronous grain removing punch is in a downward protruding design, the downward protruding angle of the cross section is 3-7 degrees, and the downward protruding angle can be 5 degrees during actual production, so that the die-entering angle during cold extrusion molding is correspondingly increased compared with a straight design, and further the generation of microcracks during cold extrusion is effectively reduced.
Further, the arc-shaped joint of the outer end of the special-shaped shaft which is not communicated is arc-shaped, the arc-shaped inclination angle is 10-20 degrees, and the fillet radius of the arc-shaped joint is increased during actual production, so that the generation of microcracks in the cold extrusion forming process is reduced, and the quality and the strength of the special-shaped shaft which is not communicated are effectively improved.
Furthermore, the synchronous grain removing punch comprises an extrusion end, a repairing end and a shaping end, the extrusion end, the repairing end and the shaping end are sequentially and fixedly connected from bottom to top, the extrusion end is mainly used for stamping and shaping, so that the inner wall of the non-through shaft is vertically downward, the repairing end is used for immediately smearing instantaneous repairing liquid on the inner wall of the non-through special-shaped shaft after stamping, so that the instantaneous repairing liquid enters a crack generated during stamping, the number of microcracks on the non-through special-shaped shaft is effectively reduced, the quality of the non-through special-shaped shaft is effectively improved, the service life is prolonged, the shaping end is used for quickly leveling the instantaneous repairing liquid and quickly condensing and shaping the instantaneous repairing liquid, the smoothness of the inner wall of the non-through special-shaped shaft is effectively ensured, and meanwhile, the situation that the instantaneous repairing liquid is not dried in time to cause the downward sliding of the non-through special-shaped shaft and influence, thereby reducing the procedure of polishing the inner wall in the later period.
Further, the design end bears the weight of the end and the layer is moulded to outer high temperature including interior punching press, the layer parcel is moulded to outer high temperature in the end is born the weight of in the punching press including, and the plastic internal portion of outer high temperature inlays and has the heating wire, the plastic surface of outer high temperature scribbles and is equipped with the self-cleaning coating of nanometer, can go the line drift temperature in step through the heating wire control higher to effectively guarantee to repair the instantaneous repair liquid that the department of branch flowed and fix a design fast under the high temperature, thereby effectively improve the smoothness nature that does not link up the dysmorphism axle inner.
Furthermore, a repair cavity is cut in the repair end, instant repair liquid is filled in the repair cavity, the inner punching bearing end is provided with a vent hole inside, the repair cavity is communicated with the vent hole, the upper end of the inner punching bearing end is fixedly connected with a vent pipe communicated with the vent hole, the left end and the right end of the repair cavity are both provided with dynamic repair layers, the outer ends of the repair ends are provided with a plurality of repair ports which are uniformly distributed, the dynamic repair layers are matched with the repair ports, when in cold extrusion molding, inert gas can be filled into the vent hole through the vent pipe, the inert gas can push the instantaneous repair liquid outwards to move the dynamic repair layer and push the dynamic repair layer to be in contact with the inner wall of the non-through special-shaped shaft, and then make instantaneous repair liquid evenly coat on not lining up the dysmorphism axle inner wall, effectively guarantee to the smoothness of its inner wall after not lining up the dysmorphism axle.
Furthermore, the dynamic repairing layer comprises a limiting net ring and a dynamic screen plate which are fixedly connected with the repairing cavity and close to the inner wall of the repairing opening, one end of the limiting net ring and one end of the dynamic screen plate, which are close to each other, are fixedly connected with a plurality of uniformly distributed speed-limiting villi, the speed-limiting villi are used for protecting the instantaneous repairing liquid, so that the instantaneous repairing liquid can not be sprayed too much at one time when being extruded by inert gas, the instantaneous repairing liquid can be effectively prevented from being directly sprayed on the inner wall of the non-through special-shaped shaft, the uniformity of the instantaneous repairing liquid on the inner wall of the non-through special-shaped shaft is not communicated, the repairing effect is effectively improved, meanwhile, when the dynamic repairing layer is extruded, the instantaneous repairing liquid absorbed in the speed-limiting villi can be rapidly extruded from the inside, the speed of the instantaneous repairing liquid is accelerated to be, the limiting net ring is used for limiting and fixing the dynamic repairing layer, so that the dynamic repairing layer is not easy to retreat into the repairing cavity when being extruded by the inner wall of the non-through special-shaped shaft, and the close contact between the inner wall of the non-through special-shaped shaft and the dynamic repairing layer is effectively ensured.
Furthermore, one side of the dynamic screen plate, which is far away from the speed-limiting fluff, is fixedly connected with a homogenizing fiber brush, the homogenizing fiber brush is matched with the repairing port, and the homogenizing fiber brush extends to the outside of the repairing end to ensure that the homogenizing fiber brush can contact the inner wall of the special-shaped shaft, so that the repairing of microcracks on the inner wall is effectively ensured, the quality of the special-shaped shaft which is not communicated is effectively improved, and the service life is prolonged.
Furthermore, the dynamic otter board includes with restoreing cavity inner wall fixed connection's static holding ring and connecting the interior dynamic indefinite form net of static holding ring, the dynamic indefinite form net is the elasticity material for can take place certain deformation under the opposite extrusion that does not link up special-shaped axle and air, the outflow of instantaneous repair liquid is quickened, improves the repair success rate to the crazing line.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme is at first through the radius and the die angle of increase circular arc chamfer, thereby effectively reduce the production of crazing line in cold extrusion forming process, effectively improve the quality and the intensity that do not link up the dysmorphism axle, and through removing filling inert gas in the line drift in step, in cold extrusion, inert gas can extrude instantaneous repair liquid, make dynamic repair layer deformation and the contact that does not link up the dysmorphism axle, thereby evenly coat instantaneous repair liquid at the axle inner wall, carry out the crazing line to the inner wall that extruded does not link up the dysmorphism axle and repair, and after repairing, can in time fix the shape fast to the instantaneous repair liquid of coating at the inner wall that does not link up the dysmorphism axle, thereby effectively improve the smoothness and the repair quality that do not link up the dysmorphism axle inner wall, thereby reduce the process of polishing to the inner wall in later stage, improve
(2) The hardness of the forged piece after annealing treatment is HB180-260, and the grain size is 5-8 grade.
(3) The bottom surface of the synchronous grain removing punch is in a downward protruding design, the downward protruding angle of the cross section is 3-7 degrees, and the downward protruding angle can be 5 degrees during actual production, so that the die entering angle during cold extrusion molding is correspondingly increased compared with a straight design, and further the generation of microcracks during cold extrusion is effectively reduced.
(4) The arc-shaped joint of the outer end joint of the special-shaped shaft is not communicated with the arc-shaped joint, the arc-shaped inclination angle is 10-20 degrees, and the angle of the arc-shaped inclination angle can be 15 degrees during actual production, so that the radius of the fillet of the arc-shaped joint is increased, the generation of microcracks in the cold extrusion molding process is reduced, and the quality and the strength of the special-shaped shaft are effectively improved.
(5) The synchronous grain-removing punch comprises an extrusion end head, a repairing end and a shaping end, wherein the extrusion end head, the repairing end and the shaping end are fixedly connected in sequence from bottom to top, the extrusion end head is mainly used for stamping and shaping, so that the inner wall of the blind shaft is vertically downward, the repair end is used for immediately smearing instantaneous repair liquid on the inner wall of the blind special-shaped shaft after stamping, so that the instantaneous repair liquid enters the cracks generated during stamping, thereby effectively reducing the number of microcracks which do not penetrate through the special-shaped shaft, thereby effectively improving the quality of the non-through special-shaped shaft and prolonging the service life, the shaping end is used for quickly floating the instantaneous repair liquid and quickly condensing and solidifying the instantaneous repair liquid, and then effectively guarantee not to link up the smoothness of dysmorphism axle inner wall, avoid instantaneous repair liquid not in time to become dry simultaneously, lead to its landing downwards, influence the condition that does not link up the holistic smoothness of dysmorphism axle to reduce the process that the later stage polished to the inner wall.
(6) The design end bears the weight of the end and the layer is moulded to outer high temperature including interior punching press, the layer parcel is moulded to outer high temperature in the end is born the weight of in the punching press including, and the internal portion of moulding layer of outer high temperature inlays and has the heating wire, the outer surface coating of moulding layer of outer high temperature is equipped with the self-cleaning coating of nanometer, can go the line drift temperature higher in step through the heating wire control, thereby effectively guarantee to repair the instantaneous repair liquid that the end department flowed out and stereotype fast under high temperature, thereby effectively improve the smoothness nature that does not link.
(7) The inner part of the repairing end is chiseled with a repairing cavity, the repairing cavity is filled with instant repairing liquid, the inner part of the inner stamping bearing end is chiseled with vent holes, the repairing cavity is communicated with the vent holes, the upper end of the inner stamping bearing end is fixedly connected with a vent pipe communicated with the vent holes, the left end and the right end of the repairing cavity are respectively provided with a dynamic repairing layer, the outer end of the repairing end is chiseled with a plurality of repairing ports which are uniformly distributed, the dynamic repairing layers are matched with the repairing ports, when in cold extrusion molding, inert gas can be filled into the vent holes through the vent pipes, the inert gas can outwards push the instant repairing liquid to enable the dynamic repairing layers to move, and push the dynamic repairing layers to be in contact with the inner wall of the non-through special-shaped shaft, so that the instant repairing liquid is uniformly coated on the inner.
(8) The dynamic repairing layer comprises a limiting net ring and a dynamic net plate which are fixedly connected with the repairing cavity and close to the inner wall of the repairing opening, one end of the limiting net ring and one end of the dynamic net plate, which are close to each other, are fixedly connected with a plurality of uniformly distributed speed-limiting villi, the speed-limiting villi are used for protecting the instantaneous repairing liquid, so that the instantaneous repairing liquid can not be sprayed too much at one time when being extruded by inert gas, the instantaneous repairing liquid can be effectively prevented from being directly sprayed on the inner wall of the non-through special-shaped shaft, the uniformity of the instantaneous repairing liquid on the inner wall of the non-through special-shaped shaft is not through, the repairing effect is effectively improved, meanwhile, when the dynamic repairing layer is extruded, the instantaneous repairing liquid absorbed in the speed-limiting villi can be quickly extruded from the inside, the speed of the instantaneous repairing liquid is accelerated to be coated on the non-through special-, the dynamic repairing layer is not easy to retreat into the repairing cavity when being extruded by the inner wall of the non-through special-shaped shaft, thereby effectively ensuring the close contact between the inner wall of the non-through special-shaped shaft and the dynamic repairing layer.
(9) One side of the dynamic screen plate, which is far away from the speed-limiting fluff, is fixedly connected with a homogenizing fiber brush, the homogenizing fiber brush is matched with the repairing port, and the homogenizing fiber brush extends to the outside of the repairing end to ensure that the homogenizing fiber brush can contact the inner wall of the special-shaped shaft without being communicated, so that the repairing of microcracks on the inner wall of the special-shaped shaft is effectively ensured, the quality of the special-shaped shaft without being communicated is effectively improved, and the service life is prolonged.
(10) The dynamic otter board includes with repairing the inner wall fixed connection's of cavity static holding ring and connect the interior dynamic indefinite form net of static holding ring, and dynamic indefinite form net is the elasticity material for can take place certain deformation under the opposite extrusion of special-shaped axle and air not link up, the outflow of instantaneous repair liquid is quickened, improves the repair success rate to the crazing line.
Drawings
FIG. 1 is a schematic diagram of the main flow structure of the present invention;
FIG. 2 is a schematic perspective view of a non-penetrating shaft according to the present invention;
FIG. 3 is a schematic structural view of the present invention without penetrating the front surface of the shaft;
FIG. 4 is a schematic structural view of the front face of the synchronized stripping punch of the present invention;
FIG. 5 is a schematic structural view of a formal cross section of the synchronous stripping punch of the present invention;
fig. 6 is a schematic view of the structure at a in fig. 5.
The reference numbers in the figures illustrate:
1 extrusion end, 2 repair end, 21 repair cavity, 3 shaping end, 31 inner stamping bearing end, 32 outer high-temperature shaping layer, 4 vent holes, 51 static positioning ring, 52 dynamic unshaped net, 6 homogenization fiber brush, 7 limit net ring, 8 speed limit fluff and 9 vent pipe.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-2, a process for forming an ultra-long non-through shaft includes the following steps:
s1, blanking according to the required dimension of the non-through special-shaped shaft to obtain a forging coarse material;
s2, annealing the rough material of the forging;
s3, turning the annealed forge piece rough material to make a blank, and performing shot blasting phosphorus saponification treatment after the blank is made to obtain a shaft blank;
s4, controlling the temperature of the synchronous de-texturing punch to be 40-50 ℃, and simultaneously filling inert gas into the synchronous de-texturing punch during extrusion forming;
and S5, cold extrusion molding, namely extruding the shaft blank for multiple times through a synchronous thread-removing punch with high temperature and filled with inert gas until molding to obtain the non-through special-shaped shaft.
The hardness of the forged piece after annealing treatment is HB180-260, the grain size is 5-8 grade, please refer to FIG. 3, the bottom surface of the synchronous grain-removing punch is in a downward protruding design, the downward protruding angle of the cross section is 3-7 degrees, and in actual production, the downward protruding angle can be 5 degrees, so that the die-entering angle during cold extrusion molding is correspondingly increased compared with a straight design, further the generation of microcracks during cold extrusion is effectively reduced, the arc-shaped connecting part which does not penetrate through the outer end connecting part of the special-shaped shaft is in arc connection, the arc-shaped inclination angle is 10-20 degrees, and the actual production can be 15 degrees.
Referring to fig. 4, the synchronous de-texturing punch comprises an extrusion end 1, a repair end 2 and a shaping end 3, wherein the extrusion end 1, the repair end 2 and the shaping end 3 are fixedly connected from bottom to top, the extrusion end 1 is mainly used for stamping and shaping, so that the inner wall of the blind shaft is vertically downward, the repair end 2 is used for immediately coating instantaneous repair liquid on the inner wall of the blind shaft after stamping, so that the instantaneous repair liquid enters cracks generated during stamping, the number of micro cracks on the blind shaft is effectively reduced, the quality of the blind shaft is effectively improved, the service life is prolonged, the shaping end 3 is used for quickly leveling the instantaneous repair liquid and quickly condensing and shaping the same, the smoothness of the inner wall of the blind shaft is effectively ensured, and the situation that the smoothness of the instantaneous repair liquid slides downward to affect the whole of the blind shaft is avoided, thereby reducing the procedure of polishing the inner wall in the later period.
Referring to fig. 5, the shaping end 3 includes an inner stamping bearing end 31 and an outer high temperature plastic layer 32, the outer high temperature plastic layer 32 is wrapped in the inner stamping bearing end 31, an electric heating wire is embedded in the outer high temperature plastic layer 32, a nano self-cleaning coating is coated on the outer surface of the outer high temperature plastic layer 32, the temperature of a synchronous pattern-removing punch head can be controlled by the electric heating wire to be higher, so that the instant repair liquid flowing out from the repair end 2 can be effectively ensured to be rapidly shaped at high temperature, the smoothness of the inner wall of the special-shaped shaft is effectively improved, a repair cavity 21 is drilled in the repair end 2, the repair cavity 21 is filled with the instant repair liquid, the instant repair liquid can be a metal repair agent, a vent hole 4 is drilled in the inner stamping bearing end 31, the repair cavity 21 is communicated with the vent hole 4, a vent pipe 9 communicated with the repair hole 4 is fixedly connected to the upper end of the inner stamping, the outer end of the repair end 2 is provided with a plurality of repair ports which are uniformly distributed, the dynamic repair layer is matched with the repair ports, when the cold extrusion molding is carried out, inert gas can be filled into the vent hole 4 through the vent pipe 9, the inert gas can outwards push the instantaneous repair liquid to enable the dynamic repair layer to move, the dynamic repair layer is pushed to be in contact with the inner wall of the non-through special-shaped shaft, the instantaneous repair liquid is further uniformly coated on the inner wall of the non-through special-shaped shaft, and the smoothness of the inner wall of the non-through special-shaped shaft after the repair is effectively guaranteed.
The celery trunk gets across the picture 6, the dynamic repairing layer comprises a limiting net ring 7 and a dynamic screen plate which are fixedly connected with the inner wall of a repairing cavity 21 close to a repairing opening, one end of the limiting net ring 7 close to the dynamic screen plate is fixedly connected with a plurality of speed-limiting villi 8 which are uniformly distributed, the speed-limiting villi 8 are used for protecting instant repairing liquid, when the instant repairing liquid is extruded by inert gas, the instant repairing liquid cannot be sprayed too much at one time, the instant repairing liquid is effectively prevented from being directly sprayed on the inner wall of a non-through special-shaped shaft, the uniformity of the instant repairing liquid on the inner wall of the non-through special-shaped shaft is prevented from being communicated, the repairing effect is effectively improved, meanwhile, when the dynamic repairing layer is extruded, the instant repairing liquid absorbed in the speed-limiting villi 8 can be rapidly extruded from the inside, the speed of the instant repairing liquid coated on the non-through, the limiting net ring 7 is used for limiting and fixing the dynamic repairing layer, so that the dynamic repairing layer is not easy to retreat into the repairing cavity 21 when being extruded by the inner wall of the non-through special-shaped shaft, and the tight contact between the non-through special-shaped shaft and the dynamic repairing layer is effectively ensured;
one side of the dynamic screen far away from the speed-limiting fluff 8 is fixedly connected with a homogenized fiber brush 6, the homogenized fiber brush 6 is matched with a repair port, the homogenized fiber brush 6 extends to the outside of the repair end 2, the homogenized fiber brush 6 can be ensured to be in contact with the inner wall of the non-through special-shaped shaft, the repair of microcracks on the inner wall of the non-through special-shaped shaft is effectively ensured, the quality of the non-through special-shaped shaft is effectively improved, the service life is prolonged, the dynamic screen comprises a static positioning ring 51 fixedly connected with the inner wall of the repair cavity 21 and a dynamic amorphous net 52 connected to the inner end of the static positioning ring 51, the dynamic amorphous net 52 is made of an elastic material, certain deformation can be generated under the opposite extrusion of the non-through special-shaped shaft and air, the outflow of instantaneous repair.
Firstly, the radius and the die-entering angle of the arc chamfer are increased, so that the generation of microcracks in the cold extrusion forming process is effectively reduced, the quality and the strength of the non-through special-shaped shaft are effectively improved, in addition, through the use of the synchronous line-removing punch heads, in the cold extrusion process, the inert gas is filled into the synchronous line-removing punch heads, the inert gas can extrude the instant repair liquid at the same time of cold extrusion, so that the dynamic repair layer is deformed to be in contact with the non-through special-shaped shaft, the instant repair liquid is uniformly coated on the inner wall of the shaft, the microcracks of the extruded non-through special-shaped shaft are repaired, in addition, the instant repair liquid coated on the inner wall of the non-through special-shaped shaft can be quickly shaped at high temperature in time after repair, the repair quality of the microcracks by the instant repair liquid is better, and the smoothness of the non-through, the influence on the smoothness of the inner wall caused by the existence of the instantaneous repairing liquid is reduced.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (10)
1. A machining and forming process of an overlong non-through special-shaped shaft is characterized in that: the method comprises the following steps:
s1, blanking according to the required dimension of the non-through special-shaped shaft to obtain a forging coarse material;
s2, annealing the rough material of the forging;
s3, turning the annealed forge piece rough material to make a blank, and performing shot blasting phosphorus saponification treatment after the blank is made to obtain a shaft blank;
s4, controlling the temperature of the synchronous de-texturing punch to be 40-50 ℃, and simultaneously filling inert gas into the synchronous de-texturing punch during extrusion forming;
and S5, cold extrusion molding, namely extruding the shaft blank for multiple times through a synchronous de-texturing punch with high temperature and filled with inert gas until molding.
2. The machining and forming process of the super-long non-penetrating special-shaped shaft according to claim 1, characterized in that: the hardness of the forged piece after annealing treatment is HB180-260, and the grain size is 5-8 grade.
3. The machining and forming process of the super-long non-penetrating special-shaped shaft according to claim 1, characterized in that: the bottom surface of the synchronous grain-removing punch is in a downward protruding design, and the downward protruding angle of the cross section is 3-7 degrees.
4. The machining and forming process of the super-long non-penetrating special-shaped shaft according to claim 1, characterized in that: the arc-shaped connecting part at the connecting part of the outer end of the non-through special-shaped shaft is in arc-shaped connection, and the inclination angle of the arc is 10-20 degrees.
5. The machining and forming process of the super-long non-penetrating special-shaped shaft according to claim 1, characterized in that: the synchronous line-removing punch comprises an extrusion end head (1), a repairing end (2) and a shaping end (3), wherein the extrusion end head (1), the repairing end (2) and the shaping end (3) are fixedly connected in sequence from bottom to top.
6. The process of claim 5, wherein the forming process comprises the following steps: design end (3) bear end (31) and outer high temperature plastic layer (32) including interior punching press, in end (31) is born in the punching press including outer high temperature plastic layer (32) parcel, outer high temperature plastic layer (32) inside inlays and has the heating wire, outer high temperature plastic layer (32) surface is scribbled and is equipped with the self-cleaning coating of nanometer.
7. The process of claim 6, wherein the forming process comprises the following steps: repair end (2) inside excavation and have restoreed cavity (21), it has instantaneous repair liquid to fill in restoration cavity (21), interior punching press bears end (31) inside excavation and has air vent (4), restore cavity (21) and air vent (4) and communicate with each other, interior punching press bears end (31) upper end fixedly connected with and air vent (4) communicating breather pipe (9), both ends all are equipped with dynamic restoration layer about restoring cavity (21), it has a plurality of evenly distributed's restoration mouth to repair end (2) outer end excavation, dynamic restoration layer and restoration mouth phase-match.
8. The process of claim 7, wherein the forming process comprises the steps of: the dynamic repairing layer comprises a limiting net ring (7) and a dynamic net plate, wherein the limiting net ring (7) and the dynamic net plate are fixedly connected to the repairing cavity (21) and close to the inner wall of the repairing opening, and one end, close to each other, of the limiting net ring (7) and the dynamic net plate is fixedly connected with a plurality of uniformly distributed speed limiting villus (8).
9. The process of claim 8, wherein the forming process comprises the steps of: one side of the dynamic screen plate, which is far away from the speed-limiting fluff (8), is fixedly connected with a homogenizing fiber brush (6), the homogenizing fiber brush (6) is matched with the repairing port, and the homogenizing fiber brush (6) extends to the outer side of the repairing end (2).
10. The process of claim 9, wherein the forming process comprises the following steps: the dynamic otter board comprises a static positioning ring (51) fixedly connected with the inner wall of the repair cavity (21) and a dynamic amorphous net (52) connected to the inner end of the static positioning ring (51), and the dynamic amorphous net (52) is made of elastic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635711.1A CN112025205B (en) | 2020-07-03 | 2020-07-03 | Machining and forming process of super-long non-through special-shaped shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010635711.1A CN112025205B (en) | 2020-07-03 | 2020-07-03 | Machining and forming process of super-long non-through special-shaped shaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112025205A true CN112025205A (en) | 2020-12-04 |
| CN112025205B CN112025205B (en) | 2022-03-18 |
Family
ID=73579530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010635711.1A Active CN112025205B (en) | 2020-07-03 | 2020-07-03 | Machining and forming process of super-long non-through special-shaped shaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112025205B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4217771A (en) * | 1977-12-27 | 1980-08-19 | Braun Engineering Company | Method of cold forming |
| JP2012024819A (en) * | 2010-07-26 | 2012-02-09 | Showa Denko Kk | Extruding tool |
| CN104942276A (en) * | 2015-06-02 | 2015-09-30 | 遵义金业机械铸造有限公司 | Casting gap repair method |
| CN104985413A (en) * | 2015-08-11 | 2015-10-21 | 重庆创精温锻成型有限公司 | Automobile gearbox P-gear gear manufacturing method |
| CN106216972A (en) * | 2016-08-23 | 2016-12-14 | 浙江康灵电器有限公司 | Extrusion forming process of laughing somebody to scorn spent by a kind of isolator |
| CN209565428U (en) * | 2019-02-26 | 2019-11-01 | 山东大学 | A kind of inductile plate forming mold, formation system |
-
2020
- 2020-07-03 CN CN202010635711.1A patent/CN112025205B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4217771A (en) * | 1977-12-27 | 1980-08-19 | Braun Engineering Company | Method of cold forming |
| JP2012024819A (en) * | 2010-07-26 | 2012-02-09 | Showa Denko Kk | Extruding tool |
| CN104942276A (en) * | 2015-06-02 | 2015-09-30 | 遵义金业机械铸造有限公司 | Casting gap repair method |
| CN104985413A (en) * | 2015-08-11 | 2015-10-21 | 重庆创精温锻成型有限公司 | Automobile gearbox P-gear gear manufacturing method |
| CN106216972A (en) * | 2016-08-23 | 2016-12-14 | 浙江康灵电器有限公司 | Extrusion forming process of laughing somebody to scorn spent by a kind of isolator |
| CN209565428U (en) * | 2019-02-26 | 2019-11-01 | 山东大学 | A kind of inductile plate forming mold, formation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112025205B (en) | 2022-03-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107262645A (en) | A kind of new-energy automotive air-conditioning compressor shaft bearing forming technology | |
| US7770427B2 (en) | Metal forged product, upper or lower arm, preform of the arm, production method for the metal forged product, forging die, and metal forged product production system | |
| CN107186450B (en) | Automobile CVT automatic transmission planet carrier board manufacturing process | |
| CN104551552B (en) | Thermally-formed wheel manufacturing method | |
| CN101162036B (en) | Steel automobile wheel counterbalance and manufacturing technique thereof | |
| CN114054586A (en) | Punch forming process for large-area hyperbolic mirror surface stainless steel plate | |
| US7340934B2 (en) | Press molding die and manufacturing method of same | |
| CN112025205B (en) | Machining and forming process of super-long non-through special-shaped shaft | |
| CN104690513A (en) | Solder tip production process | |
| CN112427476A (en) | Gear warm extrusion processing technology and extrusion die thereof | |
| CN106112381B (en) | The technique and device of axis are worn in multiple-point geostatistics reparation | |
| JP5801783B2 (en) | Split dice | |
| CN213172463U (en) | Expander for gear quenching | |
| CN113941678B (en) | Forging process for hub sleeve warm forging and cold extrusion and die thereof | |
| JP3846785B2 (en) | Closed forging method, mold and closed forging production system | |
| CN105414437B (en) | A kind of precompressed hole using soft riveting post and the compound sheet material connection method of riveting | |
| CN210334998U (en) | Tool for extruding and reinforcing square arm hole | |
| CN207728848U (en) | New-energy automobile reducer gear axis | |
| JP5483292B2 (en) | Manufacturing method of metal forging products | |
| JP4703961B2 (en) | Manufacturing method of metal forging products | |
| CN111546020A (en) | Shunting cold extrusion high-precision forming method for automobile spiral bevel gear | |
| CN213350636U (en) | Machining die for thrust ball pin | |
| CN206588291U (en) | A kind of EPB clamp forging equipment and its forging blank | |
| CN215143479U (en) | Cold extrusion shape mould subassembly of preapring for an unfavorable turn of events | |
| CN214768669U (en) | Forging machine main die is used in production of automobile parts terminal bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: The Processing and Forming Technology of an Ultra Long Non penetrating Special Shaped Shaft Effective date of registration: 20230530 Granted publication date: 20220318 Pledgee: Bank of China Limited by Share Ltd. Xinghua branch Pledgor: JIANGSU HAIYU MACHINERY Co.,Ltd. Registration number: Y2023980042277 |