CN106424286A - Spinning forming method and device based on laser heating - Google Patents

Abstract

The invention discloses a spinning forming method and device based on laser heating. The spinning forming device is characterized by comprising a numerically-controlled spinning machine, spinning process equipment, a laser device, a light guide system, a six-degree-of-freedom robot machining system, a laser machining head, a temperature measuring device and the like. The spinning forming device conducts high-accuracy flexible control over a heating area according to the characteristics of high laser heating speed, accurate and controllable heating parts and temperatures and high degree of freedom and accurate control of the six-degree-of-freedom robot machining system, and spun blanks can be dynamically and locally heated while the spinning process equipment is not heated. The purposes of improving the material spinnability and reducing damage to the spinning machine are achieved. Meanwhile, closed-loop control over the heating temperature and laser output is realized, and realization of production automation is realized. The spinning forming method and device based on laser heating have the advantages of being high in production efficiency, good in process stability, high in forming precision, convenient to operate and the like.

Description

Spinning forming method and device based on laser heating

technical field

The invention relates to the technical field of metal plastic processing, in particular to a laser heating spinning forming method and equipment.

Background technique

Spinning is a continuous partial plastic forming process, which is mainly used to form thin-walled hollow rotary parts. Compared with the overall forming process, it has the characteristics of small forming load, low requirements for the tonnage of forming equipment, and good material deformation conditions; common Lightweight materials, such as aluminum alloys, magnesium alloys, titanium alloys, etc., and superalloys cannot be formed at room temperature, and need to be shaped under heating, so the application of heating spinning is gradually increasing.

Due to the poor adaptability of heating in the furnace to the size of the spinning billet, flame heating or induction heating devices are often used to heat the billet during the spinning process in production practice. When the artificial flame heating or the flame heating device is fixed on the wheel seat, the temperature field of the spinning parts is not uniform, and the flame crosses the boundary and is easy to burn the equipment. Adjustment to improve the accuracy of temperature control; Patent No. CN105637356 proposes the use of induction heating spinning to solve the problems of flame heating temperature uniformity, large heat radiation, and low labor efficiency.

Regardless of whether the electric furnace is used to pre-heat the spinning blank as a whole, or the online heating is used to locally heat the spinning blank, the process equipment involved in forming, including the rotary wheel and the mandrel, must be preheated before forming, which will make the forming process equipment The structure is complicated. For example, the patent No. CN104249116A proposes to use a mandrel with an internal heating device in hot spinning, but there are still problems such as large heat radiation, which affects the service life of process equipment and spinning equipment.

With the development of laser technology, fiber laser technology with long service life and low requirements for use environment and maintenance has gradually matured, making spinning processing based on laser heating possible. Using high-energy-density laser instead of conventional energy to locally heat the spinning blank can not only improve the plasticity of the material, greatly improve the machinability of difficult-to-machine materials, but also reduce the heat treatment process between spinning passes, effectively improving the Productivity.

Contents of the invention

Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a spinning method based on laser heating, and at the same time provides a corresponding device, through synchronous application of heating laser beams, the improvement of the spinning ability of the material in the deformation zone can be realized, especially It is suitable for spinning forming of difficult-to-machine materials that require high forming precision and surface quality.

In order to achieve the above object, the present invention adopts the following technical solutions:

A spinning forming device based on laser heating, comprising: CNC spinning equipment, spinning process equipment and a laser heating system, wherein: the CNC spinning equipment includes a digital control system, a tail top, a wheel frame and a spindle, and the The digital control system is equipped with a spinning program and is connected to the main shaft and the wheel frame respectively; the spinning process equipment includes a wheel and a mandrel, the mandrel is coaxially connected to the output end of the main shaft, and the wheel is installed On the rotating wheel frame, the tail top is coaxial with the mandrel and tightens the spinning blank fitted on the mandrel; the laser heating system includes a heating control system, a laser, a light guide system, a six-degree-of-freedom robot, and a laser processing head and a temperature measuring device; the heating control system is equipped with a six-degree-of-freedom robot processing system and a heating program, and is connected to the laser and the six-degree-of-freedom robot respectively, and the laser is delivered to the laser processing head through the light guide system, and the The laser processing head collimates and focuses the laser, and the focused beam irradiates the surface of the spinning blank to form an irradiation area on the surface of the spinning blank. The laser processing head is fixed on the end of the six-degree-of-freedom robot, and the temperature measuring device is fixed on the On the laser processing head, and aim at the temperature measuring area in the heating area formed by the laser on the surface of the spinning blank, the temperature measuring device is connected with the heating control system so as to output the measured temperature to the heating control system.

Preferably, the laser is a continuous laser.

Preferably, there are 1, 2 or 3 spinning wheels, and their quantity and distribution are designed according to the geometry, wall thickness and material of the spinning part.

Preferably, it is characterized in that the temperature measuring device is a non-contact temperature measuring device.

A method of utilizing the laser heating spinning forming device to realize spinning forming based on laser heating, the specific steps are as follows:

(1) According to the shape, size and material of the spinning blank, design the spinning forming process parameters and/or wheel track, and form the spinning program in the digital control system; according to the spinning forming process parameters/or wheel track, and According to the heating temperature requirements of the spinning blank, design the laser heating parameters and/or the trajectory of the irradiation area. The laser heating parameters include the spot size and laser power, and form a heating program in the input heating control system;

(2) Use alcohol or acetone to clean the grease and dirt on the surface of the spinning blank before laser heating spinning, then dry, and then pre-absorb the light-absorbing coating on the surface of the spinning blank opposite to the laser processing head;

(3) Clamp the spinning blank on the mandrel;

(4) Preset the initial position and/or angle γ of the rotary wheel through the digital control system;

(5) Move and/or rotate the six-degree-of-freedom robot through the heating control system, adjust the initial position and/or angle β of the laser processing head, and preset the relative position of the laser spot and the local deformation zone, including the relative circumferential angle α and axial spacing Δ;

(6) Use magnetic tools to fix the temperature measuring device at the end of the laser processing head or the six-degree-of-freedom robot, and align it with the temperature measuring area of the heating area;

(7) Start the spinning program and heating program at the same time, the spindle drives the mandrel fixed on it to rotate, and the spinning blank also rotates accordingly. At the same time, the laser emits light and irradiates the surface of the spinning blank through the laser processing head ;

(8) Under the common control of the digital control system and the heating control system, the rotary wheel and the laser processing head feed synchronously while maintaining the preset axial distance Δ, and the rotary wheel rolls the materials in the heating area, and the measured The temperature device feeds back the temperature in the temperature measuring area to the heating control system in real time to ensure that the temperature in the heating area meets the requirements of spinning;

(9) After the forming is completed, the system is initialized, the laser stops emitting light, and the laser heating head and the rotary wheel return to their initial positions;

(10) The main shaft stops, the tail top is released, and the spinning parts are removed.

Preferably, the parameters in the spinning program include spindle speed, feed ratio and/or reduction.

Preferably, the digital control system controls the rotation of the main shaft and the movement of the spinning wheel according to a preset spinning program.

Preferably, the heating control system controls the turning on and off of the laser, the output power, the movement of the six-degree-of-freedom robot and the laser processing head fixed at its end according to a preset heating program.

Preferably, the digital control system controls the loading trajectory of the rotary wheel, and the heating control system ensures the coordination between the movement of the local deformation zone and the laser irradiation zone by controlling the trajectory of the laser irradiation zone and the laser parameters, so that the local deformation zone is in the state of laser heating. Within the scope of the deformation zone, and the temperature in the deformation zone meets the requirements of spinning forming.

Preferably, the temperature measuring area is aligned with the irradiated area or the local deformation area away from the irradiated area or the area close to the irradiated area or the area close to the local deformation area far from the irradiated area.

The laser heating spinning forming method and equipment proposed by the present invention have the following beneficial effects:

①Using laser as the heating source, the material absorbs the laser energy, and the temperature required for plastic deformation can be reached in an instant, with high heating efficiency and environmental protection;

②On-line heating is performed on the deformation zone of the material and its surroundings, which is not limited by the size and shape of the spinning parts, and the process is flexible;

③ By controlling the heating area and heating depth, the heat input is reduced, which not only saves energy, but also effectively improves the service life of spinning equipment and process equipment;

④By adjusting the laser parameters and the size of the irradiated area, the temperature and depth of the heating zone can be precisely controlled, the temperature change of the deformation zone is consistent, the process stability is good, and the forming quality is high;

⑤ By controlling the laser parameters and laser irradiation trajectory, the distribution of the heating area on the surface of the spinning blank is controlled. The whole process is controlled by a computer system. The forming process has good repeatability, easy automation, high precision and low labor intensity.

Description of drawings

Fig. 1 is the structural representation of the laser heating spinning forming device based on the present invention;

Fig. 2 is the right view of Fig. 1, and the schematic diagram of the position distribution of the laser irradiation area, the laser heating area and the material deformation area on the spinning blank when single rotary wheel forming is adopted;

Figure 3 is a schematic diagram of the position distribution of the laser irradiation area, laser heating area and material deformation area on the spinning blank when two rotary wheels are used for forming;

Figure 4 is a schematic diagram of the position distribution of the laser irradiation area, laser heating area and material deformation area on the spinning blank when three rotary wheels are used for forming;

Fig. 5 is a schematic diagram of a specific embodiment of the present invention;

Fig. 6 is a schematic diagram of a second embodiment of the present invention.

detailed description

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

The spinning forming device based on laser heating includes a numerical control spinning equipment 1, a spinning process equipment 2, and a laser heating system 4; the numerical control spinning equipment 1 includes a digital control system 11, a tail top 12, a wheel frame 13 and a main shaft 14; The spinning process equipment 2 includes a rotary wheel 21 and a mandrel 22, the mandrel 22 is coaxially connected to the output end of the main shaft 14, the mandrel 22 is covered with a spinning blank 3, and the tail top 12 is coaxial with the mandrel 22 Tightly spin the blank 3, the wheel frame 13 is provided with a wheel 21, the number of the wheel 21 is 1, 2 or 3, and its quantity and distribution are designed according to the geometric shape, wall thickness and material of the spinning part , in this embodiment, preferably, when the number of rotary wheels 21 is two, they are distributed along the surface of the spinning blank 3 in a circular shape of 180 degrees; when the number of rotary wheels 21 is three, they are distributed in a circular shape of 120 degrees along the surface of the spinning blank 3 The laser heating system 4 comprises a heating control system 41, a laser 42, a light guide system 43, a six-degree-of-freedom robot 44, a laser processing head 45 and a temperature measuring device 46, the laser 42 is a fiber laser, the light guide system 43 is an optical fiber, and the laser 42 The laser light is delivered to the laser processing head 45 through the light guide system 43 to form a focused beam. The laser processing head 45 is fixed at the end of the six-degree-of-freedom robot 44 connected to the heating control system 41, and is controlled by the heating program installed in the heating control system 41. The degree of freedom robot 44 moves, drives the laser processing head 45 to form the trajectory of the irradiation area (B), the heating control system 41 is connected with the laser 42, and is used to control the opening and closing of the laser 42 and the size of the output power, and the temperature measuring device 46 is fixed on On the laser processing head 45, aim at the temperature measuring area of the heating area A on the surface of the spinning blank 3, and output the measured temperature to the heating control system 41 connected thereto; the digital control system 11 is provided with a spinning program, Control the main shaft 14 and the wheel frame 13 connected therewith to realize the track of the local deformation zone D produced by the wheel 21 in the surface heating area A of the spinning blank 3 .

Referring to Figures 1-6, a method based on laser heating spinning, the steps are as follows:

(1) According to the shape, size and material of the formed part, design the spinning forming process parameters and/or wheel track, said parameters include: spindle speed, feed ratio and/or reduction are formed in the digital control system 11 Spinning program; design laser heating parameters and/or irradiation area B track according to spinning forming process parameters/or wheel track, and material requirements for heating temperature, laser heating parameters include spot size and laser power, input heating Form the heating program in the control system 41;

(2) For materials with low laser absorptivity, use alcohol or acetone to clean the grease and dirt on the surface of the spinning blank 3 before laser heating spinning, then dry it, and then clean the surface on the side of the spinning blank 3 opposite to the laser processing head 45. Pre-absorbed coating;

(3) Fasten the spinning blank 3 on the mandrel 22;

(4) Preset the initial position and/or angle γ of the rotary wheel 21 through the digital control system 11;

(5) Move and/or rotate the six-degree-of-freedom robot 44 through the heating control system 41, adjust the initial position and/or angle β of the laser processing head 45, and preset the relative position of the laser spot and the local deformation zone D, including the relative circumferential angle α and axial spacing Δ;

(6) Use a magnetic tool to fix the temperature measuring device 46 on the end of the laser processing head 45 or the six-degree-of-freedom robot 44, and align it with the temperature measuring area of the heating area A;

(7) Start the spinning program and the heating program at the same time, the main shaft 14 drives the mandrel 22 fixed on it to rotate, and the spinning blank 3 also rotates thereupon. At the same time, the laser 42 emits light, and the laser processing head 45 is used for spinning The surface of the blank 3 is irradiated;

(8) Under the common control of the digital control system 11 and the heating control system 41, the rotary wheel 21 and the laser processing head 45 are fed synchronously while maintaining the preset distance Δ, and the rotary wheel 21 performs the heating on the material in the heating area A. Rolling, the temperature measuring device 46 feeds back the temperature in the temperature measuring area to the heating control system 41 in real time, so as to ensure that the temperature in the heating area A meets the requirements of spinning;

(9) After the forming is completed, the system is initialized, the laser 42 stops emitting light, and the laser heating head 45 and the rotary wheel 21 respectively return to their initial positions;

(10) The main shaft 14 stops, the tail top 12 is released, and the spinning part is unloaded.

The method works as follows:

(1) A continuous laser is used as a heating source to irradiate the surface of the spinning blank 3 to form an irradiated area B. Due to the absorption of laser energy, the temperature of the irradiated area B and its surrounding areas rises rapidly to form a heated area A. When the temperature is heated to a certain range (lower than the recrystallization temperature of the spinning blank 3), the spinability of the material in the heating area A is improved, which is conducive to forming processing;

(2) Utilize the six-degree-of-freedom robot 44 processing system to control the movement of the laser processing head 45, realize the adjustment of the position of the laser processing head 45 relative to the surface of the spinning blank 3 and the control of the relative motion between the two, and cooperate with the corresponding The laser parameters can realize the precise control of the distribution of the heating area A, the heating temperature and the heating depth, and control the heating temperature within the range required by the thermal spinning. damage to equipment;

(3) According to the geometric parameters, materials and spinning program process parameters of the spinning blank 3, design the laser heating trajectory, and determine the laser output power and the position and size of the irradiation area B, and form the laser heating program in the heating control system 41 , during the spinning forming process, in addition to controlling the laser 42, the heating control system 41 also controls the movement of the six-degree-of-freedom robot 44, and then realizes the loading of the laser heating trajectory on the surface of the spinning blank through the laser processing head 45, ensuring that during the forming process, The local deformation area D produced by the rotary wheel 21 is always in the heating area A formed by laser heating, and the temperature of the inner and outer surfaces of the local deformation area D meets the requirements of spinning processing;

(4) The temperature measuring device 46 detects the temperature of the heating area A in real time, and the closed-loop control system adjusts the output power of the laser 42 and the laser spot size to keep the temperature of the heating area A stable, so as to achieve accurate control of the heating process, In order to realize automatic production;

(5) For materials with low laser absorptivity, use alcohol or acetone to clean the grease and dirt on the surface of the spinning blank 3 before laser heating and spinning, then dry it, and then clean it on the surface of the spinning blank 3 opposite to the laser processing head 45. Pre-prepared light-absorbing coating to improve the material's absorption rate of laser light.

Example 1: Flow spinning of AZ31 magnesium alloy

AZ31 magnesium alloy cannot be shaped at room temperature, it needs to be heated to 200-350°C before spinning, and it is easy to oxidize, and has low absorption rate of laser; flow spinning is also called strong spinning of cylindrical parts, and the cylindrical parts The wall thickness of the workpiece is reduced from the initial value t ₀ to the workpiece wall thickness of t workpiece, and the shape does not change. The forming is mostly processed in the form of multiple rotary wheels (the rotary wheels are evenly distributed along the circumferential direction), and double rotary wheels are often used in production. Wheel or three-rotation wheel; the forming process includes two kinds of forward rotation and reverse rotation. In this example, the anti-spinning process (adding chuck 23 to the spinning process equipment) is used to spin the workpiece with an initial wall thickness of 3.5mm and a length of 40mm into a workpiece with a wall thickness of 1.5mm and a length of 93mm. Wheels are carried out, and the rotary wheels 21 are arranged at 180°, and are arranged on both sides of the main shaft 14 of the spinning equipment.

Carrying out flow spinning of AZ31 magnesium alloy according to the above working process also includes the following steps:

According to the shape, size and material of the formed parts, design the parameters of the spinning forming process. The parameters include: the spindle speed is 450r/min, the feed rate is 0.25mm/s and the reduction is 2mm;

According to the spinning forming process parameters/or the track of the wheel, and the requirements of the material on the heating temperature, design the laser heating parameters (for the shape of the spinning blank 3 during the forming process, so the same track as the loading of the wheel 21 is used, here There is no need to design), the laser heating parameters include spot diameter 6mm and laser rated power 1500w (output power 1498w);

Use alcohol or acetone to clean the grease and dirt on the outer surface of the AZ31 magnesium alloy cylinder (spinning blank 3), and dry it, then pre-set carbon powder on the outer surface, and finally push the AZ31 magnesium alloy cylinder to the chuck 23, when forming The rotary wheel 21 rolls the blank and clamps it on the mandrel 22;

Move the six-degree-of-freedom robot 44 so that the laser beam output by the laser processing head 45 is perpendicularly incident on the surface of the spinning blank 3 (the initial angle β is 90°), and the relative circular angle α between the laser spot and the local deformation areas D and D' is 90° and the axial spacing Δ is 4mm;

The infrared camera is fixed on the laser processing head 45, and its camera is aimed at the irradiation area B (in the heating area A);

Start the spinning program and the heating program at the same time, the rotary wheel 21 and the laser processing head 45 are fed synchronously while maintaining the preset distance Δ, and the rotary wheel 21 rolls the materials in the local deformation areas D and D'. During this process, The temperature closed-loop control system controls the temperature of the irradiation area B within the range of 300-350°C.

The AZ31 magnesium alloy cylinder that cannot be formed at room temperature was successfully formed by laser heating spinning method, which took a total of 170 seconds (including blank clamping, flow spinning forming and unloading), compared with traditional furnace heating (furnace heating Compared with electric induction heating (which takes minutes to preheat), the heating efficiency is high and the processing cycle is greatly shortened. Due to the short heating time, cold spinning equipment and process equipment can be directly used for production, without the need for hot spinning process equipment, and there is no need to add heat insulation elements or cooling devices to the spinning equipment; at the same time, the forming quality is high, and the spinning parts The surface roughness is Ra0.8μm, no scale, reducing material loss.

Example 2: 0Cr18Ni9 stainless steel single-pass deep drawing and spinning

The difference from Example 1 is:

The forming process is deep-drawing spinning, which needs to spin a circular flat plate with a wall thickness _t0 of 1.6mm into a cup-shaped piece with a wall thickness t of 1.6mm, that is, the wall thickness remains unchanged, and the shape changes. Round 21 proceeds.

The forming material is 0Cr18Ni9 stainless steel, which is austenitic stainless steel and has good plasticity at room temperature, but martensite is easily induced during the deformation process, resulting in cracking. When processing at room temperature, it is advisable to use multi-pass spinning to reduce the influence of strain-induced martensite. In order to reduce the influence of work hardening, it is necessary to increase the annealing process between passes; The forming accuracy is poor.

Spinning process parameters include: spindle speed 200r/min, feed rate 0.1mm/s (single-pass processing, not allowed to set the wheel loading trajectory);

The heating temperature range of the material is 600-800°C. The laser heating parameters include the spot diameter of 5mm and the rated power of the laser 42 of 2200w (output power of 2190w). Since the shape of the spinning blank changes continuously during the forming process, the laser heating trajectory needs to be designed;

0Cr18Ni9 stainless steel does not need to be pretreated, and the spinning blank 3 is a flat plate, which is fastened on the mandrel 22 through the tail top 12;

The laser beam output by the laser processing head 45 is obliquely incident on the surface of the spinning blank 3, the initial incident angle β is 60°), the relative circumferential angle α between the laser spot and the local deformation zone D is 45° and the axial distance Δ is 2.5mm;

Use a colorimetric thermometer to measure the temperature of the temperature measurement area C on the side of the heating area A close to the local deformation area D, and the controlled temperature is 690-720 °C.

Although 0Cr18Ni9 stainless steel can be formed at room temperature, its spinability is poor. For a 0Cr18Ni9 slab with a diameter of 150mm, at least two passes are required to form it into a cup-shaped piece with an inner diameter of 100mm. Forming defects, but the spinning method based on laser heating can complete the forming in a single pass without forming defects, and the springback of the spinning parts is reduced by 15%. Therefore, the method based on laser heating can increase the forming limit of the material, that is, improve the spinability of the material, reduce the forming passes, and omit the heat treatment process between passes, improve the production efficiency, and at the same time improve the quality of the spinning parts. forming accuracy.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solutions of the present invention and its Any equivalent replacement or change of the inventive concept shall fall within the protection scope of the present invention.

Claims (10)

1. a kind of based on LASER HEATING rotary pressing moulding device it is characterised in that：Including：CNC Spinning equipment (1), spinning process fills Standby (2) and LASER HEATING system (4), wherein：Described CNC Spinning equipment (1) include numerical control system (11), tail top (12), Spinning roller frame (13) and main shaft (14), described numerical control system (11) be provided with spinning program and respectively with described main shaft (14) and rotation Wheel carrier (13) connects；Described spinning process equipment includes spinning roller (21) and core (22), described core (22) coaxially connected in master Axle (1) outfan, described spinning roller (21) is arranged on spinning roller frame (13), and tail top (12) are coaxial with core (22) and hold out against and be sleeved on Spinning blank (3) on core (22)；Described LASER HEATING system (4) includes heating control system (41), laser instrument (42), leads Photosystem (43), six-DOF robot (44), laser Machining head (45) and temperature measuring equipment (46)；Described heating control system (41) be provided with six-DOF robot (44) system of processing and heating schedule, and respectively with laser instrument (42) and six degree of freedom machine People (44) connects, and laser is delivered to laser Machining head (45), described laser by light-conducting system (43) by described laser instrument (42) Processing head (45) is collimated to laser and is focused on, focus on light beam irradiation spinning blank surface, forms spoke in spinning blank surface According to region (B), described laser Machining head (45) is fixed on six-DOF robot (44) end, and described temperature measuring equipment (46) is fixing On laser Machining head (45), and it is directed at temperature measuring area in the heating region (A) that spinning blank surface is formed for the laser, described survey Warm device (46) is connected with heating control system (41), will record temperature to export to heating control system (41).

2. according to claim 1 based on LASER HEATING rotary pressing moulding device it is characterised in that：Described laser instrument (42) is Continuous wave laser.

3. according to claim 1 and 2 based on LASER HEATING rotary pressing moulding device it is characterised in that：Described spinning roller (21) For 1 or 2 or 3, its quantity and distribution form are designed according to the geometry of spinning part, wall thickness and material.

4. according to claim 1 based on LASER HEATING rotary pressing moulding device it is characterised in that described temperature measuring equipment (46) For contactless temperature measuring equipment.

5. forming device described in a kind of utilization claim 1 realize method based on LASER HEATING mould pressing it is characterised in that： Comprise the following steps that：

(1) according to the shape of spinning blank (3), size and material, design spinning forming process parameter and/or Roller locus, Form spinning program in numerical control system (11)；According to spinning forming process parameter/or Roller locus, and spinning blank (3) requirement to heating-up temperature, design LASER HEATING parameter and/or irradiation zone (B) track, described LASER HEATING parameter includes Spot size and laser power, form heating schedule in input heating control system (41)；

(2) oils and fatss and the dirt on spinning blank (3) surface, Ran Hougan is cleaned before LASER HEATING spinning using ethanol or acetone Dry, then in the preset light-absorbing coating of relative laser processing head (45) side surface of spinning blank (3)；

(3) spinning blank (3) is clamped on core (22)；

(4) numerical control system (11), the initial position of default spinning roller (21) and/or angle γ are passed through；

(5) pass through heating control system (41) and move and/or rotate six-DOF robot (44), adjustment laser Machining head (45) Initial position and/or angle beta, the relative position in default laser facula and local deformation area (D), include relative circumferential angle α with Axial spacing Δ；

(6) using Magnetic tools, temperature measuring equipment (46) is fixed on laser Machining head (45) or the end of six-DOF robot (44) End, is aligned with the temperature measuring area of heating region (A)；

(7) start spinning program and heating schedule, main shaft (14) drives core (22) fixed thereon to rotate, spinning base simultaneously Material (3) also concomitant rotation, meanwhile, laser instrument (42) goes out light, by laser Machining head (45), spinning blank (3) surface is entered Row irradiation；

(8) under the co- controlling of numerical control system (11) and heating control system (41), spinning roller (21) and laser Machining head (45) while keeping default axial spacing Δ, synchro-feed, spinning roller (21) grinds to the material in heating region (A) Pressure, temperature measuring equipment (46) by the temperature Real-time Feedback in temperature measuring area to heating control system (41), to ensure heating region (A) Temperature meets the requirement of mould pressing；

(9) after shaping terminates, system initialization, laser instrument (42) stops light, and LASER HEATING head (45) and spinning roller (21) are each Return to initial position；

(10) main shaft (14) stall, tail top (12) unclamp, and unload spinning part.

6. the method based on LASER HEATING mould pressing according to claim 5 it is characterised in that：In described spinning program Parameter include the speed of mainshaft, feed ratio and/or drafts.

7. the method based on LASER HEATING mould pressing according to claim 5 or 6 it is characterised in that：Described numeral control System (11) processed main shaft (14) rotation and spinning roller (21) motion according to default spinning programme-control.

8. the method based on LASER HEATING mould pressing according to claim 5 it is characterised in that：Described computer heating control system System (41) controls open and close and output, the six-DOF robot (44) of laser instrument (42) according to default heating schedule With the motion being fixed on its end laser Machining head.

9. according to claim 5 or 6 or 8 based on LASER HEATING rotary pressing moulding device it is characterised in that：Described numeral control System (11) processed controls spinning roller (21) loading track, and described heating control system (41) passes through to control laser irradiation region (B) track With laser parameter it is ensured that the coordination moved of local deformation area (D) and irradiation zone (B) is so that local deformation area (D) is in laser In the range of the thermal treatment zone, and the temperature in local deformation area (D) meets the demand of mould pressing.

10. the method based on LASER HEATING mould pressing according to claim 5 it is characterised in that：Described temperature measuring area pair Accurate described irradiation zone (B) or the described local deformation area (D) away from irradiation zone (B) or described near irradiation zone (B) Region or the described region near the local deformation area (D) away from irradiation zone (B).