A method and apparatus for high-frequency coil heating and forming of titanium alloy ring-rib parts.

Abstract

This invention provides a high-frequency coil heating forming device for titanium alloy ring-ribbed parts, comprising a high-frequency induction heating unit, an inner-support rotary chuck unit, an automatic horizontal rotary unit, a forming wheel unit, and a hydraulic power unit. The inner-support rotary chuck unit is mounted on the automatic horizontal rotary unit and uses a slider to round the ring ribs. The hydraulic power unit provides power for the slider movement and is located below the automatic horizontal rotary unit. The high-frequency induction heating unit and the forming wheel unit are respectively mounted on the sides of the automatic horizontal rotary unit. The high-frequency induction heating unit heats the ring rib material on the inner-support rotary chuck unit through a high-frequency heating coil, and the forming wheel unit is used to process the end flange structure of the ring ribs. This invention achieves efficient heating of titanium alloy ring-ribbed parts to their forming temperature and maintains it constant. The horizontal rotary table performs horizontal rotational motion, coupled with the forming wheel, to complete the hot forming of the vertical edges of the ring ribs.

Description

Technical Field

[0001] This invention relates to a method and apparatus for heating and forming high-frequency coils for titanium alloy ring-ribbed parts, belonging to the field of mechanical technology. Background Technology

[0002] Currently, titanium alloy parts are widely used in components of aerospace and other products, and the production requirements for these parts are developing towards higher efficiency, lower cost, and larger batch sizes. For titanium alloy ring-ribbed parts, existing forming methods involve high labor intensity for operators, and the production efficiency cannot meet the requirements of batch production. Summary of the Invention

[0003] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a high-frequency coil heating forming method and forming device for titanium alloy ring rib parts. It can efficiently heat the titanium alloy ring rib parts to their forming temperature and keep it constant. At the same time, the horizontal rotary table performs horizontal rotation and couples with the forming wheel to complete the hot forming of the vertical edge of the ring rib.

[0004] The technical solution of the present invention is: a high-frequency coil heating and forming device for titanium alloy ring-ribbed parts, comprising a high-frequency induction heating unit, an inner support rotary chuck unit, an automatic horizontal rotation unit, a forming wheel unit, and a hydraulic station power unit;

[0005] The inner support rotary chuck unit is mounted on the automatic horizontal rotary unit. The inner support rotary chuck unit uses a slider to round the ring rib. The hydraulic power unit provides power for the movement of the slider and is located below the automatic horizontal rotary unit. The high-frequency induction heating unit and the forming wheel unit are respectively mounted on the side of the automatic horizontal rotary unit. The high-frequency induction heating unit heats the ring rib material on the inner support rotary chuck unit through a high-frequency heating coil. The forming wheel unit is used to process the end flange structure of the ring rib.

[0006] Furthermore, the aforementioned high-frequency coil heating and forming device for titanium alloy ring-ribbed parts also includes a support structure unit, which supports the high-frequency induction heating unit, the inner support rotary chuck unit, the automatic horizontal rotation unit, the forming wheel unit, and the hydraulic station power unit.

[0007] Furthermore, the high-frequency induction heating unit includes a high-frequency heating device, a heating device support, a high-frequency heating coil, and a support base; the high-frequency heating device is installed on the mounting plate of the heating device support, and the support base is located below the heating device support and is fixedly connected to the support structure unit by a bolt connection structure.

[0008] Furthermore, the high-frequency induction heating unit also includes an adjusting sleeve, adjusting feet, and mounting studs; the height of the heating equipment support can be raised or lowered by rotating the adjusting sleeve, adjusting feet, and mounting studs.

[0009] Furthermore, the internal support rotary chuck unit includes a rotary chuck, a main slider, an auxiliary slider, a slider connecting bolt, an auxiliary slider crank, a thrust bearing, a main slider crank, a slider limit block, a sliding sleeve support seat, a screw, an adapter screw sleeve, a sliding sleeve, a spring washer, an adjusting screw mounting seat, an adjusting screw locking nut, and an adjusting screw.

[0010] The rotary chuck is equipped with several T-slots for mounting the main and auxiliary sliders. The main and auxiliary sliders are installed within these T-slots and reciprocate along the slots in a centripetal linear motion. The main slider is connected to the corresponding mounting slot of the sliding sleeve via a main slider crank and slider connecting bolts. The auxiliary slider is connected to another corresponding mounting slot of the sliding sleeve via a main slider crank and slider connecting bolts. The main and auxiliary sliders are spaced apart, and their outer circumferences after assembly serve as support rings. Slider limit blocks are installed within the slots of the rotary chuck to limit the movement of the front ends of the main and auxiliary sliders. The sliding sleeve is fitted onto the sliding sleeve... On the sleeve support base, the sliding sleeve support base is fixedly installed at the bottom end of the rotary chuck via a spring washer; a screw and an adapter screw sleeve are installed in the center hole of the sliding sleeve support base, an adjusting screw is installed in the internal threaded hole at the top of the screw, a thrust bearing is installed at the shoulder of the upper end of the adjusting screw, and the adjusting screw mounting seat is installed and fastened to the upper end of the sliding sleeve, so that the rotary chuck can rotate horizontally while the screw and adjusting screw transmit the thrust of the hydraulic cylinder; by adjusting the engagement depth of the adjusting screw into the threaded hole at the upper end of the screw, the horizontal position height of the sliding sleeve is adjusted to realize the horizontal opening and closing stroke of the main slider and the auxiliary slider, and the position size is locked by tightening the lock nut.

[0011] Furthermore, the automatic horizontal rotation unit includes: a hydraulic horizontal rotary table; a rotary chuck with a fixed inner support rotary chuck unit installed on the upper end of the hydraulic horizontal rotary table, which drives the rotary chuck to perform horizontal rotation.

[0012] Furthermore, the forming wheel unit includes: a forming wheel, a guide wheel, a wheel axle nut, a slide, a handwheel seat, a handwheel, a slide support seat, and a forming wheel axle; the two forming wheels and the guide wheel are respectively installed in three grooves of the slide, and are fixedly installed on the slide by the forming wheel axle and the wheel axle nut, so as to realize the horizontal rotation of the forming wheel; the bottom of the slide is engaged with the dovetail at the upper end of the slide support seat through the dovetail groove; a trapezoidal thread outer diameter is provided on the other side of the slide, and through the guidance of the handwheel seat, the slide slides horizontally along the dovetail groove under the manual rotation of the handwheel, so as to realize the horizontal displacement of the forming wheel to complete the forming feed function of the ring rib, and the upper and lower forming wheels are used to process the inward flange structure at both ends of the ring rib.

[0013] Furthermore, the forming wheel unit also includes a positioning pin, and the bottom of the slide support base is provided with a positioning pin for positioning and connection with the support structure unit.

[0014] Furthermore, the hydraulic power unit includes a hydraulic cylinder and a hydraulic power station. The hydraulic cylinder is connected to a screw through an adapter sleeve to provide power for the reciprocating motion of the main slider and the auxiliary slider.

[0015] The forming method using the aforementioned high-frequency coil heating forming apparatus for titanium alloy ring-ribbed parts includes:

[0016] The ring-rib blank is installed on the inner support rotary chuck unit. By controlling the hydraulic station power unit, the positions of the main slider and the auxiliary slider are adjusted to support the inner circle of the ring-rib blank.

[0017] The high-frequency induction heating unit heats the ring rib blank, the automatic horizontal rotation unit drives the inner support rotary chuck unit to rotate, and the forming wheel of the forming wheel unit rotates horizontally and moves in the horizontal direction. The two forming wheels are controlled to form the inward flanging structure of the upper and lower ends of the ring rib blank respectively. The ring rib is formed by the cooperation of the high-frequency induction heating unit, the automatic horizontal rotation unit, the forming wheel unit and the hydraulic station power unit.

[0018] The advantages of this invention compared to the prior art are:

[0019] (1) This invention solves the problems of low welding efficiency after split molding and hot forming of high-strength titanium alloy ring-rib parts, and high cost of using hot forming molds. The device has a simple design and high reliability; it is easy to install and debug, reducing the difficulty of operation for operators and reducing development costs.

[0020] (2) Based on existing processes, this invention employs a novel high-frequency heating scheme to instantly heat titanium alloy ring-shaped parts to a forming temperature of 680–730°C, while maintaining a stable and continuous heating power output. Simultaneously, the ring-shaped parts are horizontally clamped in an internal support rotary mechanism with horizontal rotation capability. A forming wheel and its feeding mechanism are used to complete the vertical edge roll bending of the ring-shaped parts. This process significantly improves the production efficiency of ring-shaped parts forming, enabling one-time forming of the ring-shaped parts. It avoids the welding work required after separate forming in existing processes; simply tightening the ring-shaped parts and heating them is sufficient to form a complete vertical edge ring-shaped part. This reduces labor intensity, as a hydraulic station provides power output, allowing the operator to complete the forming process simply by pressing a button.

[0021] (3) This invention reduces costs. This heating method is high-frequency coil heating, which can reach the forming temperature instantly, improving efficiency while reducing costs. It provides a new forming process method for ring-rib type parts, and prepares the technical conditions for the development and mass production of similar parts in the future. Attached Figure Description

[0022] The accompanying drawings, which form part of this specification, are provided to further illustrate embodiments of the invention and, together with the textual description, explain the principles of the invention. It is obvious that the drawings described below are merely some embodiments of the invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0023] Figure 1 This is a schematic diagram of the thermoforming apparatus for titanium alloy ring rib parts according to the present invention;

[0024] Figure 2 This is a schematic diagram of the high-frequency induction heating unit of the thermoforming apparatus for titanium alloy ring rib parts according to the present invention.

[0025] Figure 3 This is a schematic diagram of the automatic internal support rotary chuck unit in the thermoforming device for titanium alloy ring rib parts of the present invention.

[0026] Figure 4 This is a schematic diagram of the automatic horizontal rotary unit in the thermoforming apparatus for titanium alloy ring rib parts of the present invention.

[0027] Figure 5 This is a schematic diagram of the forming wheel unit in the thermoforming device for titanium alloy ring rib parts of the present invention.

[0028] Figure 6 This is a schematic diagram of the support structure unit in the thermoforming device for titanium alloy ring rib parts of the present invention. Detailed Implementation

[0029] The present invention will be described in conjunction with the accompanying drawings.

[0030] A high-frequency coil heating forming device for titanium alloy ring-ribbed parts includes a high-frequency induction heating unit 1, an inner support rotary chuck unit 2, an automatic horizontal rotation unit 3, a forming wheel unit 4, a hydraulic power unit 5, and a support structure unit 6; see Figure 1 As shown.

[0031] 1. High-frequency induction heating unit

[0032] High-strength titanium alloy sheet TA15 is difficult to form at room temperature and does not meet the requirements for cold forming. When TA15 is heated to a temperature range of 750℃ to 800℃, the maximum deformation resistance is 598 to 430 MPa when the material's deformation rate is 1. Therefore, the material must be heated to a forming temperature of 680 to 730℃ and maintained at a stable heating temperature to meet the requirements for forming.

[0033] The high-frequency induction heating unit 1 includes a high-frequency heating device 11, a heating device support 12, a high-frequency heating coil 13, standard M16 nuts 14, standard M16×90 bolts 15, a support base 16, adjusting sleeves 17, adjusting feet 18 (two pieces), and mounting studs 19 (three pieces). The high-frequency heating device 11 is mounted on the mounting plate of the heating device support 12. The support base 16 is fixedly connected to the support structure unit 6 via a bolted connection structure, which includes standard M16 nuts 14 and standard M16×90 bolts 15. To allow for adjustable mounting height of the high-frequency heating coil 13, a height-adjustable bolted connection structure is designed on the underside of the heating device support 12. The height of the heating device support 12 can be raised or lowered by rotating the adjusting sleeves 17, adjusting feet 18, and mounting studs 19.

[0034] The structure of the high-frequency heating coil 13 enables localized high-frequency induction heating of the ring-rib part. When the ring-rib part rotates, and the high-frequency heating machine 11 is powered on, a strong magnetic flux with instantaneous polarity change is generated within the high-frequency heating coil 13. When the ring-rib part is penetrated by the magnetic flux, a large eddy current is formed. This eddy current conducts through the resistance of the heated metal material, creating an instantaneous heating phenomenon. After heating the part to the required temperature, the temperature is maintained constant. See [link to product description]. Figure 2 As shown.

[0035] The automatic high-frequency induction heating unit uses mature high-frequency heating equipment; based on the process characteristics of local forming of thin-walled ring-rib parts, the structure of the high-frequency heating coil is optimized to enable local high-frequency induction heating of the ring-rib parts, which can reasonably control the heating area, reduce the thermal deformation area, and concentrate the high-frequency coil in the plastic deformation area of ​​the ring-rib, reducing unnecessary power loss.

[0036] The rotational speed of the horizontal rotary table is set to 2 rpm, and the rotational diameter of the ring rib part is Φ357.6 mm; the calculated linear speed of rotation of the ring rib part is V = 37.4 mm / s. The ring rib part is locally heated to 750℃~800℃, and the included angle α of the heating area is set to 30°, and the linear length of the circumference L is set to 93 mm.

[0037] T = L / V ≈ 2.5 seconds

[0038] The calculation shows that the heating time of the high-frequency heating coil is 2.5 seconds. Considering that the coil heating has sufficient capacity margin, the heating time of the coil to 750℃~800℃ is determined to be 4 seconds.

[0039] The thickness of the heating ring ribs of the high-frequency heating coil is controlled within the range of 1.5 to 2 mm, and its rated power is calculated to be 60 KW.

[0040] 2. Internal support rotary chuck unit

[0041] The ring rib forming process requires a horizontal rotary mechanism to expand it from the inside. The internal support rotary chuck unit 2 includes: rotary chuck 21, main slider 22 (3 pieces), standard M10 self-locking nuts 23 (12 pieces), auxiliary slider 24 (3 pieces), slider connecting bolts 25 (6 pieces), auxiliary slider crank 26 (3 pieces), thrust bearing 27, standard M10×30 screw 28, main slider crank 29 (3 pieces), slider limit block 210 (6 pieces), standard M8×20 screw 211, standard M12×25 screw 212, sliding sleeve support seat 213, screw 214, adapter screw sleeve 215, sliding sleeve 216, spring washer 217, adjusting screw mounting seat 218, adjusting screw locking nut 219, and adjusting screw 220.

[0042] The rotary chuck 21 has three T-slots for mounting the main slider 22 and the auxiliary slider 24. The main slider 22 and the auxiliary slider 24 are installed in the T-slots and can reciprocate in a centripetal linear motion along the slots. The main slider 22 is connected to the corresponding mounting slot of the sliding sleeve 216 via the main slider crank 29, the standard M10 self-locking nut 23, and the slider connecting bolt 25. The auxiliary slider 24 is connected to the other three corresponding mounting slots of the sliding sleeve 216 via the main slider crank 29, the standard M10 self-locking nut 23, and the slider connecting bolt 25. A slider limiting block 210 is installed in the slot of the rotary chuck 21 and fixed with a standard M8×20 screw 211 to limit the movement position of the front ends of the main slider 22 and the auxiliary slider 24. The sliding sleeve 216 for installing the main and auxiliary sliders is fitted onto the sliding sleeve support 213. The sliding sleeve support 213 is fixedly installed at the bottom of the rotary chuck 21 by standard M12×25 screws 212 and spring washers 217. A screw 214 and an adapter screw sleeve 215 are installed in the center hole of the sliding sleeve support 213. An adjusting screw 220 is installed in the internal threaded hole at the top of the screw 214. A thrust bearing 27 is installed at the shoulder of the upper end of the adjusting screw 220. The adjusting screw mounting seat 218 is installed and fastened to the upper end of the sliding sleeve 216 by a standard M10×30 screw 28. This allows the rotary chuck 21 to rotate horizontally while the screw 214 and the adjusting screw 220 transmit the thrust of the hydraulic cylinder. By adjusting the engagement depth of the adjusting screw 220 into the threaded hole at the upper end of the screw 214, i.e., adjusting the horizontal position height of the sliding sleeve 216, the horizontal opening and closing stroke of the main slider 22 and the auxiliary slider 24 is achieved. The position dimensions are locked by the locking nut 219. Through the above functional features, the main and auxiliary sliders can perform horizontal opening and closing motions along the T-slot, thereby realizing the function of rounding the inside of the ring rib.

[0043] During the ring rib forming process, it needs to be rounded from the inside and tightened before external force can be applied to complete the forming step by step. Therefore, a crank-slider internal support mechanism was designed. Each slider is connected to the sliding sleeve located at the center of rotation through the crank. The sliding sleeve is pushed upward by the lower hydraulic cylinder. The sliding sleeve drives the crank to open the 6 sliding blocks radially along the guide groove, tightening the inner arc surface of the ring rib.

[0044] The internal support slider consists of three main sliders and three auxiliary sliders. The sliding distance of the main sliders in the guide groove is 10mm, and the sliding distance of the auxiliary sliders in the guide groove is 25.5mm. When the hydraulic cylinder pulls back the sliding sleeve, it also pulls back the main and auxiliary sliders. However, the retraction distance of the auxiliary sliders is greater than that of the main sliders, resulting in a staggered distribution of the main and auxiliary sliders. See the schematic diagram for the scheme. Figure 3 As shown.

[0045] The elastic modulus of TA15 titanium alloy sheet at 550℃ is E=73GPa, and the temperature rise stress P of the ring-rib part is...

[0046] P should be equal to E*A*ζ*ΔT

[0047] A – Cross-sectional area of ​​the part, A = 88.5 mm² 2

[0048] ΔT – Temperature rise ΔT = 780℃

[0049] P 应 =48.9KN

[0050] The temperature rise shear stress τ should be balanced by the internal support force P of the ring reinforcement, with a Poisson's ratio μ = 0.39.

[0051] P = τ 应 =0.39*P 应 =19KN

[0052] A safety factor of 1.5 is adopted.

[0053] The output constant force of the hydraulic cylinder is obtained as TT = 1.5 * P * tan28° = 15 kN.

[0054] Selected hydraulic cylinder technical specifications:

[0055] The hydraulic cylinder diameter is 63mm.

[0056] The stroke is 30mm.

[0057] If the output force is greater than 1.5 tons, take 2 tons.

[0058] The input pressure of the hydraulic cylinder is ≥6MPa.

[0059] 3. Automatic horizontal rotation unit

[0060] During the ring rib forming process, the ring rib should be kept in a state of no displacement under the internal support force of the internal support rotary chuck unit, achieving a low-speed, high-torque horizontal rotation state. The ring rib is formed by a manual feed wheel. The automatic horizontal rotation unit 3 includes: a hydraulic horizontal rotary table 31, 12 standard M16×70 screws 32, 24 standard M16×90 bolts 33, and 24 standard 16 spring washers 34.

[0061] The hydraulic horizontal rotary table 31, model SE14-85-HR-160A, has its upper end secured with standard M16×70 screws 32, which fixes the rotary chuck 21 of the inner support rotary chuck unit 2, driving it to perform horizontal rotary motion. Its lower end face is mounted on the support structure unit 6 using standard M16×90 bolts 33 and standard 16 spring washers 34 for load transfer. See... Figure 4 As shown.

[0062] During the ring rib forming process, the ring rib should be in a low-speed, high-torque horizontal rotation state, and the ring rib forming is achieved through a manual feed wheel. The automatic horizontal rotation of the horizontal rotary table is used to counteract the horizontal torque generated by the forming resistance during the forming process. A hydraulically driven horizontal rotary table can be purchased as an option; its upper end is used to mount and fix the inner support mechanism slide mounting plate, driving the ring rib to perform horizontal rotational movement, and its lower end is mounted on a fixed worktable to transfer the load. See [link / details omitted]. Figure 4 As shown.

[0063] The main components of the horizontal rotary table include a worm gear, a hydraulic motor, and a base support sleeve. The internal worm gear reduction mechanism has a reduction ratio of 85:1. The hydraulic motor drives the worm gear to rotate, which in turn drives the turbine to achieve horizontal rotation. Ball bearings are installed between the turbine and the horizontal rotary table base to reduce frictional resistance between the structural components.

[0064] The initial design requirement for the rotational speed of the horizontal rotary table during the ring reinforcement forming process is set at 2 rpm, and the feed flow rate of its hydraulic motor is ≥30L / min. Considering the high loss rate of the hydraulic system, and having sufficient capacity margin, it is easy to adjust the horizontal rotation speed of the rotary table by changing the feed flow rate of the hydraulic motor; the rated output flow rate of the hydraulic station should be appropriately increased to ≥50L / min.

[0065] 4. Forming wheel unit

[0066] The main structure of the forming wheel unit 4 includes: forming wheel 41 (2 pieces), guide wheel 42, wheel axle nut 43, slide 44, handwheel seat 45, handwheel 46, standard M12×45 screw 47 (4 pieces), standard 12 spring washer 48 (4 pieces), slide support seat 49, forming wheel axle 410 and positioning pin 411;

[0067] The forming wheel 412 and guide wheel 42 are respectively installed in three grooves of the slide block 44, and are fixedly installed on the slide block 44 by the forming wheel shaft 410 and the shaft nut 43, which can realize the horizontal rotation of the forming wheel. The bottom of the slide block 44 is designed with a dovetail groove and a dovetail of the same specification at the upper end of the slide block support 49 to achieve a small clearance fit. The other side of the slide block 44 is designed with a trapezoidal thread outer diameter of Tr26×3. Guided by the handwheel seat 45, the slide block 44 can slide horizontally along the dovetail groove when manually rotated by the handwheel 46, thereby realizing the horizontal displacement of the forming wheel 41 to complete the forming feed function of the ring rib. The bottom of the slide block support 49 is designed with a positioning pin 411 and fasteners, namely standard part M12×45 screw 47 and standard part 12 spring washer 48, for positioning and connection with the support structure unit 6, see Figure 5 As shown.

[0068] In the forming process of ring-ribbed parts, an inner support slider with dimensions perfectly matching the inner surface of the part contacts the cylindrical surface of the part, applying radial preload. The outer cylindrical surface of the part contacts the inner surface of the forming wheel for forming. The forming wheel feeds along the radial direction of the ring rib, and its ultimate radial extrusion forming resistance P = 4.5KN. If a step-by-step forming method is adopted during the forming process, the forming resistance can be significantly reduced. Its main structure includes: forming wheel, wheel axle, sliding bearing (graphite copper sleeve), slide block, handwheel seat, handwheel, etc.; see Figure 5 As shown.

[0069] After the ring-rib part is locally heated to 750℃~800℃, the rotary table rotates, bringing the front end of the locally heated area back to the forming position of the forming wheel. The surface of the ring-rib part comes into contact with the surface of the forming wheel, and heat is conducted to the forming wheel, further reducing the heat loss of the ring-rib part and lowering its temperature. The forming wheel then heats up after working for a period of time. Therefore, the forming wheel is made of hot work die steel H13, which can operate at temperatures up to 800℃, has high strength, and exhibits stable oxidation resistance under air heating.

[0070] 5. Hydraulic power unit

[0071] Hydraulic power unit 5 consists of a purchased hydraulic cylinder and a hydraulic power station. The hydraulic cylinder is model HOB63-50-FB, with a cylinder diameter of 63mm, a stroke of 50mm, and a rated thrust of 3 tons.

[0072] The hydraulic power station uses a 3.7KW-2W-F dual-line oil supply, with a rated output pressure of 8MPa and a flow rate of 30L / min.

[0073] 6. Supporting structural unit

[0074] The supporting structural unit 6 is a frame structure formed by welding rectangular tubes. Its main components include: four horizontal beams 61, a mounting base plate 62, an automatic horizontal rotation unit mounting plate 63, a hydraulic power unit mounting plate 64, a forming wheel unit mounting plate 65, two longitudinal beams 66, two reinforcing beams 67, a hydraulic cylinder support seat 68, a hydraulic cylinder support seat reinforcing rib plate 69, four columns 610, and four column reinforcing rib plates 611. These components support the high-frequency induction heating unit 1, the internal support rotary chuck unit 2, the automatic horizontal rotation unit 3, the forming wheel unit 4, and the hydraulic power unit 5, and also bear and transmit the forming load of the ring reinforcement. (See attached diagram.) Figure 6 As shown.

[0075] A crossbeam 61 and a longitudinal beam 66 form a square frame, which is supported by a column 610 at the bottom. A reinforcing beam 67 is installed at the bottom of the column 610 to form a support frame. The longitudinal beam 66 and the column 610 are reinforced by a column stiffener 611. A mounting base plate 62 is installed on the top of the support frame. An automatic horizontal rotation unit mounting plate 63 and a forming wheel unit mounting plate 65 are installed on the mounting base plate 62. A hydraulic cylinder support seat 68 is installed below the automatic horizontal rotation unit mounting plate 63. A hydraulic station power unit mounting plate 64 is installed on the hydraulic cylinder support seat 68. The bottom of the hydraulic cylinder support seat 68 is reinforced by a hydraulic cylinder support seat reinforcing rib 69.

[0076] The forming method using the aforementioned high-frequency coil heating forming apparatus for titanium alloy ring-ribbed parts includes:

[0077] The ring rib blank is installed on the inner support rotary chuck unit 2. By controlling the hydraulic station power unit 5, the positions of the main slider 22 and the auxiliary slider 24 are adjusted to support the inner circle of the ring rib blank.

[0078] The high-frequency induction heating unit 1 heats the ring rib blank, the automatic horizontal rotation unit 3 drives the inner support rotary chuck unit 2 to rotate, and the forming wheel 41 of the forming wheel unit 4 is controlled to rotate horizontally and move in the horizontal direction. The two forming wheels 41 are controlled to form the inward flanging structure of the upper and lower ends of the ring rib blank respectively. The ring rib is formed by the cooperation of the high-frequency induction heating unit 1, the automatic horizontal rotation unit 3, the forming wheel unit 4 and the hydraulic station power unit 5.

[0079] The parts of this invention not described in detail are well-known to those skilled in the art.

Claims

1. A high-frequency coil heating and forming device for titanium alloy ring-rib type parts, characterized in that, It comprises a high-frequency induction heating unit (1), an inner support rotary chuck unit (2), an automatic horizontal rotary unit (3), a forming wheel unit (4) and a hydraulic station power unit (5); The inner support rotary chuck unit (2) is installed on the automatic horizontal rotary unit (3), and the inner support rotary chuck unit (2) supports a ring rib by a sliding block, the hydraulic station power unit (5) provides power for the movement of the sliding block, and the hydraulic station power unit (5) is arranged below the automatic horizontal rotary unit (3); the high-frequency induction heating unit (1) and the forming wheel unit (4) are respectively arranged on the side of the automatic horizontal rotary unit (3), the high-frequency induction heating unit (1) heats the ring rib material on the inner support rotary chuck unit (2) through a high-frequency heating coil (13), and the forming wheel unit (4) is used for processing the end flanging structure of the ring rib; The inner support rotary chuck unit (2) comprises a rotary chuck (21), a main sliding block (22), a secondary sliding block (24), a sliding block connecting bolt (25), a secondary sliding block crank (26), a thrust bearing (27), a main sliding block crank (29), a sliding block limiting block (210), a sliding sleeve support seat (213), a screw rod (214), an adapter screw sleeve (215), a sliding sleeve (216), an elastic pad (217), an adjusting screw rod mounting seat (218), an adjusting screw rod locking nut (219) and an adjusting screw rod (220); The rotary chuck (21) is provided with a plurality of T-shaped grooves for mounting the main sliding block (22) and the secondary sliding block (24), the main sliding block (22) and the secondary sliding block (24) are respectively mounted in the T-shaped grooves and move in a centripetal straight line along the grooves; the main sliding block (22) is connected with the corresponding mounting groove of the sliding sleeve (216) through the main sliding block crank (29) and the sliding block connecting bolt (25), the secondary sliding block (24) is connected with the other corresponding mounting groove of the sliding sleeve (216) through the secondary sliding block crank (26) and the sliding block connecting bolt (25), and the main sliding block (22) and the secondary sliding block (24) are arranged at intervals; the outer circle of the spliced main sliding block (22) and secondary sliding block (24) is used for supporting the ring rib; the sliding block limiting block (210) is mounted in the groove of the rotary chuck (21) and is used for limiting the front end movement position of the main sliding block (22) and the secondary sliding block (24); the sliding sleeve (216) is sleeved on the sliding sleeve support seat (213), the sliding sleeve support seat (213) is fixedly connected and mounted at the bottom end of the rotary chuck (21) through the elastic pad (217); the screw rod (214) and the adapter screw sleeve (215) are mounted in the center hole of the sliding sleeve support seat (213), the inner threaded hole at the top end of the screw rod (214) is provided with the adjusting screw rod (220), the shaft shoulder at the upper end of the adjusting screw rod (220) is provided with the thrust bearing (27), and the adjusting screw rod mounting seat (218) is tightly mounted on the upper end of the sliding sleeve (216), so that the rotary chuck (21) rotates horizontally, and the screw rod (214) and the adjusting screw rod (220) transmit the thrust of the hydraulic cylinder. The forming wheel unit (4) comprises: a forming wheel (41), a guide wheel (42), a wheel shaft nut (43), a sliding seat (44), a hand wheel seat (45), a hand wheel (46), a sliding seat support seat (49) and a forming wheel shaft (410); two forming wheels (41) and guide wheels (42) are respectively installed in three grooves of the sliding seat (44), and are fixedly installed on the sliding seat (44) through the forming wheel shaft (410) and the wheel shaft nut (43), so that the forming wheel (41) is horizontally rotated; the bottom of the sliding seat (44) is matched with the dovetail of the upper end of the sliding seat support seat (49) through a dovetail groove; the other side of the sliding seat (44) is provided with a trapezoidal thread outer diameter.

2. The high-frequency coil heating forming device for titanium alloy ring-ribbed part according to claim 1, characterized in that, The support structure unit (6) is used for supporting the high-frequency induction heating unit (1), the inner support rotary chuck unit (2), the automatic horizontal rotation unit (3), the forming wheel unit (4) and the hydraulic station power unit (5).

3. The high-frequency coil heating forming device for titanium alloy ring-ribbed part according to claim 1, characterized in that, The high-frequency induction heating unit (1) comprises a high-frequency heating device (11), a heating device holder (12), a high-frequency heating coil (13) and a holder support seat (16); the high-frequency heating device (11) is installed on the installation plate of the heating device holder (12), and the holder support seat (16) is arranged below the heating device holder (12) and fixedly connected with the support structure unit (6) through a bolt connection structure.

4. The high-frequency coil heating forming device for titanium alloy ring-ribbed part according to claim 3, characterized in that, The high-frequency induction heating unit (1) further comprises an adjusting sleeve (17), an adjusting foot (18) and a mounting stud (19); the height position of the heating device holder (12) is raised or lowered through the rotating adjusting sleeve (17), the adjusting foot (18) and the mounting stud (19) below the heating device holder (12).

5. The high-frequency coil heating forming device for titanium alloy ring-ribbed part according to claim 1, characterized in that, The automatic horizontal rotation unit (3) comprises: a hydraulic horizontal rotation table (31); the rotary chuck (21) of the inner support rotary chuck unit (2) is fixedly installed at the upper end of the hydraulic horizontal rotation table (31), and drives the rotary chuck (21) to make horizontal rotation movement.

6. The high-frequency coil heating forming device for titanium alloy ring-ribbed part according to claim 1, characterized in that, The forming wheel unit (4) further comprises a positioning pin (411), and the bottom of the sliding seat support seat (49) is provided with the positioning pin (411) for positioning and connecting with the support structure unit (6).

7. The high-frequency coil heating forming device for titanium alloy ring-ribbed part according to claim 1, characterized in that, The hydraulic station power unit (5) comprises a hydraulic cylinder and a hydraulic power station, and the hydraulic cylinder is connected with a screw rod (214) through an adapter sleeve (215), so as to provide power for the back-and-forth movement of the main sliding block (22) and the auxiliary sliding block (24).

8. A forming method using the high-frequency coil heating forming apparatus for a titanium alloy ring-rib member according to any one of claims 1 to 7, characterized by, Comprise: The ring rib blank is installed on the inner support rotary chuck unit (2), the position of the main sliding block (22) and the auxiliary sliding block (24) is adjusted through the control of the hydraulic station power unit (5), and the inner circle of the ring rib blank is supported; The ring rib blank is heated by controlling the high-frequency induction heating unit (1), the inner support rotary chuck unit (2) is driven to rotate by the automatic horizontal rotation unit (3), the forming wheel (41) of the forming wheel unit (4) is controlled to horizontally rotate and move in the horizontal direction, and the two forming wheels (41) are controlled to form inward flanging structures on the upper and lower ends of the ring rib blank respectively; the ring rib is formed through the cooperation of the high-frequency induction heating unit (1), the automatic horizontal rotation unit (3), the forming wheel unit (4) and the hydraulic station power unit (5).

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