CN111347702B - PEEK material screw compressor rotor forging and rolling composite forming device and method - Google Patents
PEEK material screw compressor rotor forging and rolling composite forming device and method Download PDFInfo
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- CN111347702B CN111347702B CN201811567885.8A CN201811567885A CN111347702B CN 111347702 B CN111347702 B CN 111347702B CN 201811567885 A CN201811567885 A CN 201811567885A CN 111347702 B CN111347702 B CN 111347702B
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- forging
- rolling
- peek
- stainless steel
- composite forming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
- B29D99/0032—Producing rolling bodies, e.g. rollers, wheels, pulleys or pinions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
- F04C18/107—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member with helical teeth
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2240/00—Components
- F04C2240/20—Rotors
Abstract
The invention provides a PEEK material screw compressor rotor forging and rolling composite forming device and a method, which are used for processing a PEEK pipe and a stainless steel core and forging and rolling the PEEK pipe and the rotor into an integral rotor. The device comprises a working platform, a heating box, a horizontal guide rail and a forging-rolling composite forming mechanism, wherein when the device works, the PEEK pipe is subjected to rolling diameter reduction, forging-extruding of an inner limiting groove, rolling shaping and rolling and pressing of external threads through the forging-rolling composite forming mechanism, and then the processing is completed to form a final product. The manufacturing difficulty of the screw compressor rotor can be greatly reduced, the production efficiency of products is remarkably improved, and the forming precision and the structure performance of parts after forging, rolling and composite forming can be greatly improved on the basis of saving PEEK materials by about 30%.
Description
Technical Field
The invention relates to the technical field of thermoplastic plastic forming, in particular to a PEEK material screw compressor rotor forging and rolling composite forming device and method.
Background
Polyether ether ketone (PEEK) is used as a novel special engineering plastic, and has the advantages of high rigidity, good size stability, good high temperature resistance, stable chemical performance, good wear resistance, flame retardance and corrosion resistance. Due to the excellent physical and chemical properties, the material has gained wide attention and is applied to various fields of aviation, aerospace, petrochemical industry, automobiles, medical treatment and the like. The screw compressor is widely applied to the industrial fields of air power, refrigeration and air conditioning, petrochemical industry, process flow, fuel cells and the like by virtue of a series of unique advantages of simple structure, good power balance, high reliability, convenient operation and the like. However, the rotor of the screw compressor made of a single metal material is not wear-resistant and corrosion-resistant, has complex and asymmetric tooth shapes, and is large in mass, large in tooth-shaped radius, large in forming force and large in processing difficulty. At present, the main manufacturing process of the PEEK and metal composite screw compressor rotor is that a metal material stepped cylinder blank is manufactured by adopting a casting process, hard skin is removed by turning the outer surface, the blank is machined and formed, then a layer of PEEK material is injected on the surface, and the blank is formed by fine grinding. The prior art has the defects of multiple processing procedures, low production efficiency, long period, high energy consumption and the like. Particularly, in the injection molding stage, a mold needs to be opened, a complicated injection molding process wastes PEEK materials, the working environment is poor, the failure rate is high, and the development requirements of an intelligent manufacturing and resource-saving society are not met.
Disclosure of Invention
The invention provides a PEEK material screw compressor rotor forging and rolling composite forming device for solving the technical problems, which is used for processing a PEEK pipe and a stainless steel core and forging and rolling the PEEK pipe and the rotor into an integrated rotor. The stainless steel core is integrally dumbbell-shaped, the diameters of two ends are d, the diameter of the outer surface of the middle part is d-2h, a limiting groove is formed in the outer surface of the middle part, and the length of the middle part is L; the inner diameter D of the PEEK pipe is equal to the diameters of the two ends of the stainless steel core, and the length H of the PEEK pipe is smaller than L.
The device comprises a working platform, a heating box, a horizontal guide rail and a forging and rolling composite forming mechanism; the heating box, the horizontal guide rail and the forging and rolling composite forming mechanism are all arranged on the working platform.
The heating area of the heating box is internally provided with a stainless steel thimble for fixing a rotor, and the stainless steel thimble is used for clamping a stainless steel core to be processed;
the forging and rolling composite forming mechanism comprises a pair of forging and rolling composite forming die wheels and a pair of L-shaped plates, the forging and rolling composite forming die wheels are installed on the L-shaped plates, and the L-shaped plates can be installed on the horizontal guide rails in a sliding mode; the horizontal guide rail is laid perpendicular to the stainless steel thimble, and the two forging-rolling composite forming die wheels are respectively arranged on two sides of the stainless steel thimble; the two L-shaped plates synchronously move towards the stainless steel thimble by being driven by a first driving device, and the two forging-rolling composite forming die wheels synchronously rotate by being driven by a second driving device to process a stainless steel core and a PEEK pipe clamped on the stainless steel thimble;
in order to meet the processing requirement, the periphery of the forging-rolling composite forming die wheel comprises a forging working surface, a shaping working surface and a rolling working surface.
When the PEEK pipe processing device works, a PEEK pipe to be processed is sleeved on a stainless steel core, the stainless steel core is fixed on a stainless steel thimble, and the PEEK pipe is processed after rolling diameter reduction, forging extrusion of an inner limiting groove, rolling shaping and rolling pressing of external threads are carried out on the PEEK pipe through a forging and rolling composite forming mechanism, so that a final product is formed.
Optionally, the forging working surface is an inward concave arc shape, the shaping working surface is an outward convex arc shape, and the rolling working surface is provided with threads.
During working, the rolling and diameter reducing process is completed through the forging working face, the processes of the forging and extruding inner thread groove stage and the rolling and shaping stage are completed through the shaping working face, and the process of rolling and pressing the outer thread is completed through the rolling working face.
Optionally, the heating box comprises a resistance wire, a temperature probe and a refrigeration compressor, and the temperature probe is installed close to the stainless steel thimble. The heating box is a constant temperature heating box, when the temperature probe detects that the temperature near the stainless steel thimble is lower than a preset range, the heating mode is started through the resistance wire to increase the temperature, and when the detected temperature is higher than the preset range, the refrigeration mode is started through the refrigeration compressor to reduce the temperature.
Optionally, the first driving device comprises a servo motor and a crank link mechanism; one end of the crank connecting rod mechanism is connected with the servo motor, and the other end of the crank connecting rod mechanism is connected with and drives the two L-shaped plates to synchronously and reversely move.
Correspondingly, the forging-rolling composite forming method of the PEEK material screw compressor rotor can be applied to a rotor which integrates a PEEK pipe and a rotor through forging-rolling composite.
The stainless steel core is integrally dumbbell-shaped, the diameters of two ends are d, the diameter of the outer surface of the middle part is d-2h, a limiting groove is formed in the outer surface of the middle part, and the length of the middle part is L; the inner diameter D of the PEEK pipe is equal to the diameters of the two ends of the stainless steel core, and the length H of the PEEK pipe is smaller than L.
The method comprises the following steps: assembling a PEEK pipe on a stainless steel core in an excessive matching mode, and forming a rotor finished product after a rolling diameter-reducing stage, a forging and extruding inner limiting groove stage, a rolling shaping stage and a rolling and external thread stage;
after the rolling diameter reduction stage, the inner diameter of the PEEK pipe is reduced to be equal to the diameter of the outer surface of the middle part, namely D is reduced to (1-1.1) (D-2 h);
after the stage of forging and extruding the inner limiting groove, the inner wall of the PEEK pipe is extruded to deform to form a limiting bulge corresponding to the limiting groove in the middle of the stainless steel core; the outer diameter of the PEEK pipe is larger than or equal to d;
by the roll-shaping stage, the PEEK tube has an outer diameter equal to d;
through the rolling external thread stage, the external surface of the PEEK pipe forms threads.
Optionally, for reducing stress concentration, and reduce the rolling degree of difficulty of PEEK pipe, be equipped with the radius between the middle part of stainless steel core and the both ends shoulder, the radius is r.
Optionally, H ═ d (0.1 to 0.2), r ═ H (1 to 1.1), and H ═ L (0.8 to 0.9).
Optionally, the rolling diameter-reducing stage and the forging extrusion inner limiting groove stage are both performed at 100 ℃, the rolling shaping stage is performed at 100 ℃ to 200 ℃, and the rolling external thread stage is performed at 200 ℃.
Optionally, the limiting groove and the corresponding limiting protrusion are both threads, and at this time, the stage of forging and extruding the inner limiting groove is the stage of forging and extruding the inner thread groove.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
(1) the invention can greatly reduce the manufacturing difficulty of the screw compressor rotor, simplifies the structural form of the screw compressor rotor, and simultaneously reduces the friction power consumption by utilizing the self-lubricating property of the PEEK material, thereby prolonging the service life of the screw compressor and reducing the maintenance cost.
(2) By adopting the device and the method, the utilization rate of the PEEK material is greatly improved, the forging-rolling composite forming of the screw compressor rotor is realized, the traditional mechanical casting, processing and injection molding process is avoided, and the PEEK material is saved by more than 30 percent.
(3) The production efficiency of the product is obviously improved. Conservative calculation shows that about 5 minutes is consumed for injection molding of a screw rotor PEEK layer, the processing time is long, and the time consumed in the forging-rolling composite forming process is only about 15-20 seconds, so that the process time is remarkably shortened.
(4) After the forging-rolling composite forming, the PEEK material streamline keeps continuous and is distributed along the rotor shape, the internal structure changes uniformly, and the forming precision and the structure performance of the part are greatly improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
Wherein:
FIG. 1 is a schematic structural diagram of a stainless steel core of a rotor forging-rolling composite forming device of a PEEK material screw compressor;
FIG. 2 is a schematic structural diagram of a stainless steel core of a rotor forging-rolling composite forming device of a PEEK material screw compressor;
FIG. 3 is a schematic view of the stainless steel core and PEEK tube structure of the rotor forging-rolling composite forming device of the PEEK material screw compressor of the present invention;
FIG. 4 is a schematic structural diagram of a rotor forging-rolling composite forming device of a PEEK material screw compressor;
FIG. 5 is a schematic structural diagram of a rotor forging-rolling composite forming device of a PEEK material screw compressor;
FIG. 6 is a schematic structural diagram of a rotor forging-rolling composite forming device of a PEEK material screw compressor;
FIG. 7 is a schematic structural diagram of a rotor forging-rolling composite forming device of a PEEK material screw compressor;
FIG. 8 is a schematic structural view of a forging-rolling composite forming die wheel of the forging-rolling composite forming device for the rotor of the PEEK material screw compressor;
FIG. 9 is a schematic diagram of the preparation stage of the rotor forging-rolling composite forming device of a PEEK material screw compressor in use;
FIG. 10 is a schematic view of the rotor forging-rolling composite forming device of a PEEK material screw compressor at the rolling diameter reduction stage in use;
FIG. 11 is a schematic diagram of a PEEK material screw compressor rotor forging and rolling composite forming device in which an internal thread groove forging and extruding stage and a rolling and shaping stage are used;
FIG. 12 is a schematic diagram of the external thread rolling stage in the use of the PEEK material screw compressor rotor forging and rolling composite forming device;
FIG. 13 is a schematic view of the rotor of the PEEK material screw compressor rotor forging-rolling composite forming device in the preparation stage in use;
FIG. 14 is a schematic view of a PEEK material screw compressor rotor forging-rolling composite forming device in which a rotor is in a rolling diameter reduction stage in use;
FIG. 15 is a schematic view of the rotor of the PEEK material screw compressor rotor forging-rolling composite forming device in the stage of forging and extruding the inner thread groove;
FIG. 16 is a schematic view of the rotor in the stage of rolling and pressing external threads in the use of the rotor forging and rolling composite forming device of the PEEK material screw compressor;
FIG. 17 is a schematic view of the operating temperature of the forging-rolling composite forming method of a PEEK material screw compressor rotor;
the reference numerals in fig. 1 to 17 denote: 10-rotor, 11-stainless steel core, 12-PEEK tube, 21-working platform, 22-heating box, 23-horizontal guide rail, 24-stainless steel thimble, 25-forging and rolling composite forming die wheel 2, 26-L type plate, 27-driven by second driving device, 28-servo motor, 29-crank link mechanism, 251-forging working surface, 252-shaping working surface and 253-rolling working surface.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The device and the method provided by the application can be applied to the stainless steel core 11 and the PEEK pipe 12, and the PEEK pipe 12 and the stainless steel core 11 are forged and rolled to form the integrated rotor 10.
Referring to fig. 1 and 2, the stainless steel core 11 is generally dumbbell-shaped, the diameters of two ends are d, the diameter of the outer surface of the middle portion is d-2h, a limiting groove is formed in the outer surface of the middle portion, the length of the middle portion is L, and h is (0.1-0.2) d. In this embodiment, the limiting groove is a thread, and in other embodiments, the limiting groove may be a limiting groove of another form.
Referring to fig. 3, the PEEK tube 12 has an inner diameter D equal to the diameter of the two ends of the stainless steel core 11, and a length H less than L, which is (0.8-0.9) L.
In order to reduce stress concentration and reduce the rolling difficulty of the PEEK pipe 12, a rounding is arranged between the middle part and the shoulders at the two ends of the stainless steel core 11, and the radius of the rounding is r, wherein r is (1-1.1) h.
In the first embodiment, a PEEK material screw compressor rotor forging-rolling composite forming device, please refer to fig. 4 to 7, which includes a working platform 21, a heating box 22, a horizontal guide rail 23, a forging-rolling composite forming mechanism; the heating box 22, the horizontal guide rail 23 and the forging and rolling composite forming mechanism are all arranged on the working platform 21.
A stainless steel thimble 24 for fixing the rotor is arranged in the heating area of the heating box 22 and is used for clamping the stainless steel core 11 to be processed;
the forging and rolling composite forming mechanism comprises a pair of forging and rolling composite forming die wheels 25 and a pair of L-shaped plates 26, wherein the forging and rolling composite forming die wheels 25 are installed on the L-shaped plates 26, and the L-shaped plates 26 are slidably installed on the horizontal guide rails 23; the horizontal guide rail 23 is laid perpendicular to the stainless steel thimble 24, and the two forging-rolling composite forming die wheels 25 are respectively arranged on two sides of the stainless steel thimble 24; the two L-shaped plates 26 are driven by the first driving device to synchronously move towards the stainless steel thimble 24, the two forging and rolling composite forming die wheels 25 are driven by the second driving device 27 to synchronously rotate, and the stainless steel core 11 and the PEEK pipe 12 clamped on the stainless steel thimble 24 are machined.
In the present embodiment, the first driving device includes a servo motor 28 and a crank link mechanism 29; one end of the crank link mechanism 29 is connected with the servo motor 28, and the other end is connected with and drives the two L-shaped plates 26 to synchronously and reversely move.
To meet the machining requirements, the periphery of the forge and roll compound form die wheel 25 includes a forge face 251, a truing face 252, and a roll face 253. Referring to fig. 8, the forging working surface is an inward concave arc, the shaping working surface is an outward convex arc, and the rolling working surface has threads.
During operation, a PEEK tube 12 to be processed is sleeved on a stainless steel core 11, the stainless steel core 11 is fixed on a stainless steel thimble 24, namely, a preparation stage, the PEEK tube 12 is subjected to rolling diameter reduction a, rolling extrusion of an inner thread groove b, rolling shaping c and rolling extrusion of an outer thread d by a forging and rolling composite forming mechanism, and then processing is completed to form a final product, each stage can respectively refer to fig. 9, fig. 10, fig. 11 and fig. 12, the rolling diameter reduction a process is completed by a forging working face 251, the processes of the rolling extrusion of the inner thread groove b and the rolling shaping c are completed by a shaping working face 252, and the rolling extrusion of the outer thread d is completed by a rolling working face 253, and in each processing process, the shape edge of the PEEK tube 12 can respectively refer to fig. 13, fig. 14, fig. 15 and fig. 16.
In the second embodiment, on the basis of the first embodiment, the heating box 22 is a constant temperature heating box 22, and includes a resistance wire, a temperature probe and a refrigeration compressor, and the temperature probe is installed near the stainless steel thimble 24. When the temperature probe detects that the temperature near the stainless steel thimble 24 is lower than the preset range, the heating mode is started through the resistance wire to increase the temperature, and when the detected temperature is higher than the preset range, the refrigeration mode is started through the refrigeration compressor to reduce the temperature.
Referring to fig. 17, the working temperatures adopted in the present embodiment are: the rolling diameter reduction a stage and the forging extrusion inner thread groove b stage are both carried out in the environment of 100 ℃, the rolling shaping c stage is carried out at the temperature of 100 ℃ to 200 ℃, and the rolling external thread d stage is carried out in the environment of 200 ℃.
The third embodiment provides a rotor forging-rolling composite forming method of a screw compressor made of PEEK material, which is corresponding to the second embodiment and can be applied to a rotor formed by forging-rolling and compounding a PEEK pipe 12 and a rotor into a whole.
The method comprises the following steps: the PEEK pipe 12 is assembled on the stainless steel core 11 in an overfitting mode, and after the steps of rolling diameter reduction a, forging and extruding an inner thread groove b, rolling and shaping c and rolling and pressing an outer thread d, a rotor finished product is formed.
The process is carried out at the temperature of 100 ℃, after the rolling diameter reduction a stage, the inner diameter of the PEEK pipe 12 is reduced to be equal to the diameter of the outer surface of the middle part, namely D is reduced to (1-1.1) (D-2 h);
the process is carried out in an environment of 100 ℃, after the stage b of forging and extruding the inner thread groove, the inner wall of the PEEK pipe 12 is extruded to generate deformation, and a limiting bulge corresponding to a limiting groove at the middle part of the stainless steel core 11 is formed; the outer diameter of the PEEK tube 12 is greater than or equal to d;
the PEEK tube 12 has an outer diameter equal to d by the roll-shaping c-stage between 100 ℃ and 200 ℃;
the outer surface of the PEEK tube 12 is threaded through the roll-pressing male screw d stage in an environment of 200 ℃.
As can be seen from the above description of the present invention, compared with the prior art, the present invention has the following advantages:
(1) the invention can greatly reduce the manufacturing difficulty of the screw compressor rotor, simplifies the structural form of the screw compressor rotor, and simultaneously reduces the friction power consumption by utilizing the self-lubricating property of the PEEK material, thereby prolonging the service life of the screw compressor and reducing the maintenance cost.
(2) By adopting the device and the method, the utilization rate of the PEEK material is greatly improved, the forging-rolling composite forming of the screw compressor rotor is realized, the traditional mechanical casting, processing and injection molding process is avoided, and the PEEK material is saved by more than 30 percent.
(3) The production efficiency of the product is obviously improved. Conservative calculation shows that about 5 minutes is consumed for injection molding of a screw rotor PEEK layer, the processing time is long, and the time consumed in the forging-rolling composite forming process is only about 15-20 seconds, so that the process time is remarkably shortened.
(4) After the forging-rolling composite forming, the PEEK material streamline keeps continuous and is distributed along the rotor shape, the internal structure changes uniformly, and the forming precision and the structure performance of the part are greatly improved.
Claims (7)
1. A PEEK material screw compressor rotor forges and rolls the compound forming method, wherein assemble PEEK tube to the stainless steel core in the way of excessive fit, and after rolling the neck-in stage, forge and extrude the stage of the inner spacing groove, roll the shaping stage and roll and press the external screw thread stage, form the finished product of rotor;
the stainless steel core is integrally dumbbell-shaped, the diameters of two ends are d, the diameter of the outer surface of the middle part is d-2h, a limiting groove is formed in the outer surface of the middle part, the length of the middle part is L, and h is the height of a shaft shoulder of the stainless steel core;
the inner diameter D of the PEEK pipe is equal to the diameters of two ends of the stainless steel core, and the length H of the PEEK pipe is smaller than L;
after the rolling diameter reduction stage, the inner diameter of the PEEK pipe is reduced to be equal to the diameter of the outer surface of the middle part, namely D is reduced to (1-1.1) (D-2 h);
after the stage of forging and extruding the inner limiting groove, the inner wall of the PEEK pipe is extruded to deform to form a limiting bulge corresponding to the limiting groove in the middle of the stainless steel core; the outer diameter of the PEEK pipe is larger than or equal to d;
by the roll-shaping stage, the PEEK tube has an outer diameter equal to d;
through the rolling external thread stage, the external surface of the PEEK pipe forms threads.
2. The forging and rolling compound forming method for the rotor of the PEEK material screw compressor is characterized in that a radius is arranged between the middle part and the shoulder parts at the two ends of the stainless steel core, and the radius is r.
3. The forging-rolling composite forming method for the PEEK material screw compressor rotor is characterized in that H = (0.1-0.2) d, r = (1-1.1) H, and H = (0.8-0.9) L.
4. The forging-rolling composite forming method for the rotor of the PEEK material screw compressor is characterized in that the limiting groove and the corresponding limiting protrusion are both threads.
5. A device corresponding to the forging and rolling composite forming method of the PEEK material screw compressor rotor is characterized by comprising a working platform, a heating box, a horizontal guide rail and a forging and rolling composite forming mechanism;
the heating box, the horizontal guide rail and the forging-rolling composite forming mechanism are all arranged on the working platform;
a stainless steel thimble for fixing the rotor is arranged in the heating area of the heating box;
the forging and rolling composite forming mechanism comprises a pair of forging and rolling composite forming die wheels and a pair of L-shaped plates, the forging and rolling composite forming die wheels are installed on the L-shaped plates, and the L-shaped plates can be installed on the horizontal guide rails in a sliding mode; the horizontal guide rail is laid perpendicular to the stainless steel thimble, and the two forging-rolling composite forming die wheels are respectively arranged on two sides of the stainless steel thimble; the two L-shaped plates are driven by a first driving device to synchronously move towards the stainless steel thimble; the two forging and rolling composite forming die wheels synchronously rotate under the driving of a second driving device;
the periphery of the forging-rolling composite forming die wheel comprises a forging working surface, a shaping working surface and a rolling working surface;
the device is applied to stainless steel cores and processed PEEK pipes, and the PEEK pipes and the stainless steel cores are forged and rolled to form an integrated rotor; the forging working surface is in an inwards concave arc shape, the shaping working surface is in an outwards convex arc shape, and the rolling working surface is provided with threads.
6. The apparatus of claim 5, wherein the heating box comprises a resistance wire, a temperature probe and a refrigeration compressor, the temperature probe being mounted proximate to the stainless steel thimble.
7. The apparatus of claim 5, wherein the first drive means comprises a servo motor and a crank linkage; one end of the crank connecting rod mechanism is connected with the servo motor, and the other end of the crank connecting rod mechanism is connected with and drives the two L-shaped plates to synchronously and reversely move.
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| CN201811567885.8A CN111347702B (en) | 2018-12-21 | 2018-12-21 | PEEK material screw compressor rotor forging and rolling composite forming device and method |
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| CN201811567885.8A CN111347702B (en) | 2018-12-21 | 2018-12-21 | PEEK material screw compressor rotor forging and rolling composite forming device and method |
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| CN111347702A CN111347702A (en) | 2020-06-30 |
| CN111347702B true CN111347702B (en) | 2021-11-23 |
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| CN111347702A (en) | 2020-06-30 |
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