High-precision titanium alloy bar drawing forming equipment

Abstract

The application discloses a high-precision titanium alloy bar drawing forming equipment and relates to the technical field of drawing forming equipment. The equipment comprises a forming chamber, a lubricating mechanism and a drawing mechanism. The lubricating mechanism comprises a lubricating chamber, a driving plate and a filling mechanism. A variable-diameter bushing is arranged in the lubricating chamber. A plurality of lubricating members forming an annular structure are slidably arranged on the driving plate. The driving plate is driven to move by an excitation assembly. The variable-diameter bushing is used to force the lubricating members to gather or disperse radially, so as to adapt to bars with different diameters and realize close fitting. The filling mechanism automatically supplements and releases lubricant to the lubricating members along with the movement of the driving plate. At least two groups of lubricating mechanisms are arranged along the conveying direction and work alternately. The state is switched by a control system. When one group is used for close fitting lubrication, the other group is reset and supplemented with lubricant. Uninterrupted lubrication supply is realized during the drawing process. The application effectively solves the problems of discontinuous and uneven lubrication in the prior art, and improves the production efficiency of high-precision titanium material manufacturing.

Description

Technical Field

[0001] This invention relates to the field of drawing forming equipment technology, specifically a high-precision titanium alloy bar drawing forming equipment. Background Technology

[0002] Titanium is widely used in aerospace, medical implants and other fields due to its strength and excellent corrosion resistance. Drawing is one of the key processes in the production of high-precision titanium alloy bars. During the drawing process, the friction between the bar and the die is the core factor affecting the forming quality and die life. Therefore, the performance of the lubrication system is crucial.

[0003] Existing lubrication methods mostly use a single lubrication chamber or simple oil spraying. During continuous drawing operations, the lubricant will be gradually carried out with the movement of the bar, causing the lubricant to drip onto the worktable. The surface of the bar cannot be evenly coated with lubricant, and the surface of the bar is prone to scratches, adhesion, or even local overheating, resulting in dimensional deviations and failing to meet the requirements of titanium material manufacturing. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision titanium alloy bar drawing and forming equipment to solve the problems raised in the prior art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-precision titanium alloy bar drawing and forming equipment, comprising a forming chamber, a lubrication mechanism, and a drawing mechanism; The lubrication mechanism includes a lubrication chamber, a drive plate, and an injection mechanism. The lubrication chamber and the drawing mechanism are both mounted on the forming chamber. The lubrication chamber is provided with a conveying channel, and a variable diameter bushing is provided in the conveying channel. The drive plate is slidably mounted in the conveying channel. A ranging element is provided in the conveying channel at a position corresponding to the drive plate. Multiple lubricating components are slidably mounted on the drive plate. The multiple lubricating components cooperate with each other to form a ring structure. One end of each lubricating component slides in the variable diameter bushing. Excitation components are mounted on both the lubrication chamber and the drive plate. The excitation components are electromagnets, electromagnetic coils, etc., and the excitation components are electrically connected to the control system. The filling mechanism includes an oil reservoir and a pressurizing mechanism. The oil reservoir is mounted on a lubrication chamber, and the pressurizing mechanism is mounted on a drive plate. The inlet of the pressurizing mechanism is connected to the oil reservoir, and the outlet of the pressurizing mechanism is connected to a lubricating component. The drive plate is slidably mounted in the lubrication chamber via a sliding groove. The sliding groove is provided with grease to reduce friction during the sliding of the drive plate.

[0006] The inner wall of the variable diameter bushing is a conical surface, and multiple axially extending guide grooves are formed on the conical surface in the circumferential direction. The lubricating component includes a flexible liquid-absorbing element, a sliding element, and a guide plate. The flexible liquid-absorbing element and the guide plate are respectively installed at both ends of the sliding element. The sliding element is slidably installed on the drive plate, and the guide plate is slidably connected to the guide groove. The sliding member is provided with a flow channel. One end of the flow channel is connected to the flexible liquid suction element, and the other end of the flow channel is connected to the outlet of the pressurizing mechanism.

[0007] The pressurizing mechanism includes a pump housing and a pump plug, which are respectively mounted on a drive plate and a sliding member, with the sliding member penetrating the pump housing. The pump plug and the pump housing form a sliding seal connection, and the pump plug and the pump housing achieve a sliding seal through a sealing ring. One end of the pump plug is connected to the pump housing with an elastic element, and a sealed chamber is formed between the pump plug, the sliding element and the pump housing. The sealed chamber is connected to an inlet pipe, which is connected to an oil storage chamber. The sliding component that communicates with the sealed chamber is provided with a communication port. Both the inlet pipe and the communication port are provided with one-way valves.

[0008] The flexible liquid-absorbing element includes a support layer, a liquid reservoir, and an elastic layer. The support layer is mounted on a sliding component, and the liquid reservoir and elastic layer are respectively disposed on both sides of the support layer. The elastic layer is in direct contact with the surface of the titanium alloy rod, and its material is selected from oil-resistant, temperature-resistant, and extremely low surface friction coefficient materials such as fluororubber and silicone. Traditional felt or sponge oiling methods are difficult to control in terms of oil application amount and are prone to shedding, which can easily have an adverse effect on the drawing of the rod. This application adopts a multi-layer composite flexible liquid-absorbing element, in which the support layer provides skeleton strength, the liquid reservoir serves as a quantitative adjustment unit, and the elastic layer coats the rod, thereby achieving the effect of no shedding and uniform coating.

[0009] The inlet of the liquid reservoir is connected to the flow channel within the sliding member, and the outlet of the liquid reservoir is connected to the elastic layer. A one-way valve is installed inside the inlet of the liquid reservoir, and a flow control valve is installed inside the outlet of the liquid reservoir. The liquid reservoir is a liquid bladder.

[0010] The drawing mechanism includes a drawing chamber, drawing components, a drive mechanism, two sets of guide mechanisms, and a cutting mechanism. The two ends of the drawing chamber are mounted on the forming chamber via bearing seats. A drawing channel is provided inside the drawing chamber. Multiple drawing components are provided, and the multiple drawing components are sequentially arranged in the drawing channel. The drive mechanism is mounted on the forming chamber, and the output end of the drive mechanism is connected to the drawing chamber. The two sets of guiding mechanisms are located on both sides of the drawing chamber, and the cutting mechanism is located on one side of one of the guiding mechanisms.

[0011] In traditional drawing processes, there is sliding friction between the bar and the die, resulting in a significant peak in drawing force. This application transforms the static sliding friction into dynamic friction with a circumferential shear force by rotating the entire drawing part, thereby significantly reducing the pulling force required in the bar's forward direction.

[0012] The drawing chamber is provided with a heat dissipation duct, which is connected to the drawing channel. A cooling mechanism is installed on the outer side of the drawing chamber and is mounted on the forming chamber.

[0013] The guiding mechanism includes a support seat and two drive wheels. The support seat is mounted on the forming chamber, and the two drive wheels are rotatably mounted on the support seat in sequence. A gap is formed between the two drive wheels for clamping and conveying the bar. A transmission gear is mounted on one side of each of the two drive wheels. The two transmission gears mesh with each other, and one of the transmission gears is connected to the output end of the power mechanism. The cutting mechanism is located on one side of the support.

[0014] The cutting mechanism includes a cutting frame, a drive source, and a cutting component. The cutting frame is mounted on the forming chamber, the drive source is mounted on the cutting frame, the output end of the drive source is eccentrically connected to the cutting component, and one end of the cutting component is slidably mounted on the cutting frame.

[0015] The cutting component is equipped with a cutting blade, and a heating wire is installed inside the cutting blade. The heating wire is electrically connected to the control system. A temperature sensing element is installed on the cutting frame near the cutting blade, and the temperature sensing element is electrically connected to the control system. The heating wire inside the cutting component is used to preheat the cutting blade to a set temperature before cutting. The temperature sensing element near the cutting blade detects the temperature of the cutting blade in real time and feeds the temperature signal back to the control system. The control system compares the measured temperature with a preset cutting temperature threshold: when the temperature is lower than the set value, the current flowing through the heating wire is increased or the energizing time is extended; when the temperature reaches or exceeds the set value, the heating current is reduced or cut off.

[0016] Compared with the prior art, the beneficial effects of the present invention are: 1. By setting at least two independently controllable lubrication mechanisms along the drawing direction, and having the control system alternately switch working states according to a set time or drawing length, the first lubrication mechanism, when in operation, moves its drive plate to bring the lubricant into contact with the bar surface and continuously release lubricant. Meanwhile, the second lubrication mechanism is in a reset state, with its drive plate retracting to move the lubricant away from the bar. Its pressurization mechanism automatically replenishes the lubricant during this process. This alternating cycle effectively solves the technical problem of lubrication interruption caused by lubricant depletion after a period of operation in a single lubrication mechanism. It achieves seamless lubricant supply without stopping the machine, ensuring that the bar surface is always covered with a sufficient lubricating film during long-stroke or continuous drawing operations, thus improving the production efficiency of titanium manufacturing.

[0017] 2. It can adapt to bars of different diameters and has strong versatility. When the drive plate moves axially, the guide plate slides along the guide groove on the conical surface. As the radial dimension of the conical surface gradually changes, the guide plate will force the sliding component and the flexible liquid suction element to move radially inward or outward. This structure allows the annular diameter composed of multiple flexible liquid suction elements to change continuously and precisely, thereby solving the technical problem that traditional fixed-diameter lubrication devices cannot adapt to bars of different specifications or require manual adjustment. It achieves adaptive and tight fit for bars of different diameters, significantly improving the uniformity of lubrication and the versatility of the equipment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the lubrication chamber in this invention; Figure 3 This is a schematic diagram of the drive wheel structure in this invention; Figure 4 This is a schematic diagram of the drawing chamber in this invention; Figure 5 This is a schematic diagram of the drive board structure in this invention; Figure 6 This is a schematic diagram of the oil storage cavity in this invention; Figure 7 This is a schematic diagram of the variable diameter bushing in this invention; Figure 8 This is a schematic diagram of the flexible liquid-absorbing element in this invention; Figure 9 This is a schematic diagram of the pump plug structure in this invention; Figure 10 This is a schematic diagram of the liquid storage device in this invention.

[0019] In the diagram: 1. Molding chamber; 2. Lubrication mechanism; 21. Lubrication chamber; 211. Variable diameter bushing; 2111. Guide groove; 22. Drive plate; 221. Lubricating component; 2211. Flexible liquid suction element; 22111. Support layer; 22112. Liquid storage component; 22113. Elastic layer; 2212. Sliding component; 2213. Guide plate; 23. Filling mechanism; 231. Oil storage chamber; 232. Pressurization mechanism; 2321. Pump housing; 2322. Pump plug; 24. Excitation assembly; 3. Pulling mechanism; 31. Pulling chamber; 32. Pulling component; 33. Drive mechanism; 34. Guide mechanism; 341. Drive wheel; 342. Transmission gear; 343. Power mechanism; 35. Cutting mechanism; 351. Cutting frame; 352. Drive source; 353. Cutting component. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example: Figures 1-10 As shown, this invention provides a technical solution for a high-precision titanium alloy bar drawing and forming equipment, including a forming chamber 1, a lubrication mechanism 2, and a drawing mechanism 3; the lubrication mechanism 2 includes a lubrication chamber 21, a drive plate 22, and a filling mechanism 23. Both the lubrication chamber 21 and the drawing mechanism 3 are mounted on the forming chamber 1. A conveying channel is provided inside the lubrication chamber 21, and a variable diameter bushing 211 is provided inside the conveying channel. The drive plate 22 is slidably mounted inside the conveying channel, and a distance measuring element (a displacement sensor) is provided at a position corresponding to the drive plate 22 inside the conveying channel. Multiple lubricating components 2 are slidably mounted on the drive plate 22. 21. Multiple lubricating components 221 cooperate to form a ring structure. One end of the lubricating component 221 slides within the variable diameter bushing 211. Excitation components 24, such as electromagnets or electromagnetic coils, are installed on both the lubrication chamber 21 and the drive plate 22. The excitation components 24 are electrically connected to the control system. The filling mechanism 23 includes an oil storage chamber 231 and a pressurizing mechanism 232. The oil storage chamber 231 is installed on the lubrication chamber 21, and the pressurizing mechanism 232 is installed on the drive plate 22. The inlet of the pressurizing mechanism 232 is connected to the oil storage chamber 231, and the outlet of the pressurizing mechanism 232 is connected to the lubricating component 221. The drive plate 22 is slidably installed in the lubrication chamber 21 via a sliding groove. The sliding groove is provided with grease to reduce friction when the drive plate 22 slides.

[0022] At least two sets of lubrication mechanisms 2 are provided, and the two sets of lubrication mechanisms 2 are arranged sequentially along the bar conveying direction, and the two sets of lubrication mechanisms 2 work alternately. When one set of lubrication mechanisms 2 is in working state, the drive plate 22 in the lubrication mechanism 2 moves to fit against the rod under the drive of the excitation component 24. The lubricating element 221 of this set contacts the rod and continuously releases lubricant. At the same time, the other set of lubrication mechanisms 2 is in the reset state. The drive plate 22 in the other set of lubrication mechanisms 2 moves to the initial position under the reverse drive of the excitation component 24. The lubricating element 221 moves away from the rod. The pressurization mechanism 232 of this set completes the lubricant replenishment and prepares for the next operation. The two sets of lubrication mechanisms 2 are switched alternately by the control system according to the set time interval or drawing length, so as to achieve uninterrupted lubricant supply during the drawing process.

[0023] Before the actual drawing operation, the operator presets the corresponding control parameters in the control system according to the initial diameter of the titanium alloy bar to be processed. The initial position of the drive plate 22 and the energizing parameters of the excitation component 24 are calibrated according to the bar diameter to ensure that the drive plate 22 can move precisely to a position that makes slight contact with the bar surface under the drive of the excitation component 24, rather than blindly pushing it, thus avoiding scratching the bar surface due to excessive contact force or causing excessive wear of the lubricating component 221. The ranging element monitors the position of the drive plate 22 in real time and feeds the signal back to the control system to form a closed-loop control. Even if there are slight fluctuations in the bar diameter during continuous production, the drive plate 22 can automatically fine-tune its position to maintain a stable contact pressure between the lubricating component 221 and the bar.

[0024] By having two sets of lubrication mechanisms 2 work alternately, the problem of traditional drawing equipment needing to stop when changing lubricant or adjusting lubrication components is solved. When one set of lubrication mechanisms 2 is working, the other set can simultaneously complete reset and lubricant replenishment, achieving uninterrupted lubrication and significantly improving the working efficiency of the continuous drawing production line. At the same time, the non-contact drive of the excitation component 24 replaces the traditional cylinder or motor screw drive, avoiding the problem of mechanical transmission components being prone to jamming and wear in the lubrication environment. The response speed is faster, and the sliding sealing performance of the drive plate 22 is easier to guarantee.

[0025] The inner wall of the variable diameter bushing 211 is a conical surface, and multiple axially extending guide grooves 2111 are opened on the conical surface along the circumference. Each guide groove 2111 is inclined so that the guide plate 2213 generates radial displacement when sliding. The lubricating component 221 includes a flexible liquid-absorbing element 2211, a sliding component 2212 and a guide plate 2213. The flexible liquid-absorbing element 2211 and the guide plate 2213 are respectively installed at both ends of the sliding component 2212. The sliding component 2212 is slidably installed on the drive plate 22, and the guide plate 2213 is slidably connected to the guide groove 2111. A flow channel is provided in the sliding component 2212. One end of the flow channel is connected to the flexible liquid-absorbing element 2211, and the other end of the flow channel is connected to the outlet of the pressurizing mechanism 232.

[0026] During the drawing operation, the control system supplies positive current to the excitation component 24 on the lubrication chamber 21 and the drive plate 22, so that the lubrication chamber 21 and the excitation component 24 on the drive plate 22 generate mutually repulsive magnetic fields. Under the action of the magnetic field repulsion force, the drive plate 22 slides forward along the slide groove, and the drive plate 22 drives multiple sliding parts 2212 to slide forward synchronously. When the drive plate 22 drives multiple sliding members 2212 to slide forward, the drive plate 22 drives multiple sliding members 2212 to move forward synchronously. The guide plate 2213 at the end of each sliding member 2212 slides in the guide groove 2111 opened on the conical surface. Since the radial dimension of the conical surface gradually decreases along the axial direction, the guide groove 2111 forces the guide plate 2213 to move radially inward. The guide plate 2213 drives the flexible liquid absorption element 2211 to move closer to the rod through the sliding member 2212, so that the annular diameter formed by multiple flexible liquid absorption elements 2211 gradually decreases, thereby achieving the fit of rods of different diameters.

[0027] After a section of the bar is drawn, the control system supplies a reverse current to the excitation assembly 24 on the lubrication chamber 21 and the drive plate 22, causing the lubrication chamber 21 and the excitation assembly 24 on the drive plate 22 to generate mutually attractive magnetic fields. Under the attraction of the magnetic fields, the drive plate 22 slides in the opposite direction along the slide groove. At this time, the drive plate 22 drives multiple sliding members 2212 to slide in the opposite direction synchronously. The multiple sliding members 2212 respectively drive the guide plate 2213 to slide in the opposite direction. The guide plate 2213 slides in the opposite direction in the guide groove 2111. The guide plate 2213 drives the flexible liquid suction element 2211 away from the bar through the sliding members 2212, so that a new bar can enter.

[0028] The pressurizing mechanism 232 includes a pump housing 2321 and a pump plug 2322. The pump housing 2321 and the pump plug 2322 are respectively mounted on the drive plate 22 and the sliding member 2212. The sliding member 2212 passes through the pump housing 2321. A sliding seal connection is formed between the pump plug 2322 and the pump housing 2321. The sliding seal between the pump plug 2322 and the pump housing 2321 is achieved by a sealing ring. An elastic element, which is a return spring, is connected between one end of the pump plug 2322 and the pump housing 2321. A sealed chamber is formed between the pump plug 2322, the sliding member 2212 and the pump housing 2321. The sealed chamber is connected to an inlet pipe, which is connected to an oil storage chamber 231. A connecting port is provided on the sliding member 2212, which communicates with the sealed chamber. A one-way valve is provided in both the inlet pipe and the connecting port.

[0029] When the drive plate 22 slides forward, the drive plate 22 drives the sliding member 2212 to move radially inward through the guide plate 2213 and the guide groove 2111. The sliding member 2212 drives the pump plug 2322 to move radially inward. As the pump plug 2322 moves, the volume of the sealed chamber gradually decreases, and the pressure of the lubricant in the sealed chamber gradually increases. The lubricant pushes open the one-way valve in the connecting port, and the lubricant enters the flow channel of the sliding member 2212 through the connecting port. The lubricant enters the flexible liquid suction element 2211 through the flow channel.

[0030] When the drive plate 22 slides in the reverse direction, the drive plate 22 drives the sliding member 2212 to move radially outward through the guide plate 2213 and the guide groove 2111. The sliding member 2212 drives the pump plug 2322 to move radially outward. As the pump plug 2322 moves, the volume of the sealed chamber gradually increases and the pressure in the sealed chamber gradually decreases. The lubricant in the oil storage chamber 231 pushes open the one-way valve in the liquid inlet pipe. The lubricant in the oil storage chamber 231 enters the sealed chamber through the liquid inlet pipe to replenish the lubricant.

[0031] The flexible liquid-absorbing element 2211 includes a support layer 22111, a liquid storage element 22112, and an elastic layer 22113. The support layer 22111 is mounted on the sliding element 2212, and the liquid storage element 22112 and the elastic layer 22113 are respectively disposed on both sides of the support layer 22111. The elastic layer 22113 is in direct contact with the surface of the titanium alloy rod, and its material is selected from oil-resistant, temperature-resistant, and extremely low surface friction coefficient materials such as fluororubber and silicone. Traditional felt or sponge oiling methods are difficult to control in terms of oil application amount and are prone to shedding, which can negatively impact the drawing of the rod. This application utilizes a multi-layered composite flexible liquid-absorbing element 2211. The support layer 22111 provides structural strength, the liquid reservoir 22112 serves as a quantitative adjustment unit, and the elastic layer 22113 applies the oil to the rod, achieving a shedding-free and uniform coating effect. The inlet of the liquid reservoir 22112 is connected to the flow channel within the sliding member 2212, and the outlet of the liquid reservoir 22112 is connected to the elastic layer 22113. A one-way valve is installed inside the inlet of the liquid reservoir 22112, and a flow control valve is installed inside the outlet of the liquid reservoir 22112. The liquid reservoir 22112 is a liquid bladder.

[0032] When the lubricant enters the flexible liquid-absorbing element 2211, it flows through the channel into the inlet of the liquid storage component 22112. The lubricant pushes open the one-way valve inside the inlet and enters the liquid storage component 22112. As the lubricant enters, the pressure inside the liquid storage component 22112 gradually increases, and the liquid storage component 22112 gradually expands outward. Then, the flow control valve in the outlet of the liquid storage component 22112 opens, allowing the lubricant to enter the elastic layer 22113 according to the set flow rate. The lubricant is then coated on the surface of the rod through the elastic layer 22113, thus achieving lubrication of the rod surface.

[0033] The drawing mechanism 3 includes a drawing chamber 31, drawing components 32, a drive mechanism 33 (the drive mechanism 33 includes a servo motor, a belt, and two pulleys, the two pulleys are respectively installed on the output end of the servo motor and on the drawing chamber 31, and the two pulleys are connected by a belt; the servo motor is installed on the forming chamber 1, and the servo motor drives the drawing chamber 31 to rotate through the two pulleys and the belt), two sets of guide mechanisms 34, and a cutting mechanism 35. The two ends of the drawing chamber 31 are installed on the forming chamber 1 through bearing seats. A drawing channel is provided in the drawing chamber 31. Multiple drawing components 32 are provided, and multiple drawing components 32 are arranged sequentially in the drawing channel. The drive mechanism 33 is installed on the forming chamber 1, and the output end of the drive mechanism 33 is connected to the drawing chamber 31. The two sets of guide mechanisms 34 are located on both sides of the drawing chamber 31, and the cutting mechanism 35 is located on one side of one set of guide mechanisms 34.

[0034] In traditional drawing processes, there is sliding friction between the bar and the die, resulting in a significant peak in drawing force. This application transforms the static sliding friction into dynamic friction with a circumferential shear force by rotating the drawing part 32 as a whole, which greatly reduces the pulling force required in the bar's forward direction.

[0035] When the lubricated bar enters the drawing channel, it passes through each drawing member 32 in sequence. The inner diameter of the multiple drawing members 32 gradually decreases, thereby achieving a step-by-step diameter reduction drawing of the bar.

[0036] When the bar is drawn through the drawing member 32, the control system controls the drive mechanism 33 to work. The drive mechanism 33 drives the drawing chamber 31 to rotate, and the drawing chamber 31 drives multiple drawing members 32 to rotate as well. When the bar passes through the rotating drawing member 32, it is subjected to a uniform circumferential drawing force, which effectively reduces the drawing resistance and improves the surface quality of the bar.

[0037] A heat dissipation duct is provided on the drawing chamber 31, which is connected to the drawing channel. A cooling mechanism is installed on the outside of the drawing chamber 31 and is installed on the forming chamber 1. The cooling mechanism uses a combination of fan blades and semiconductor refrigeration to spray cooling air into the heat dissipation duct, so as to cool down the drawing part 32 in the drawing channel and reduce the temperature during drawing.

[0038] The guiding mechanism 34 includes a support base and two drive wheels 341. The support base is mounted on the forming chamber 1, and the two drive wheels 341 are rotatably mounted on the support base in sequence. A gap is formed between the two drive wheels 341 for clamping and conveying the bar. A transmission gear 342 is mounted on one side of each of the two drive wheels 341. The two transmission gears 342 mesh with each other. One of the transmission gears 342 is connected to the output end of the power mechanism 343. The power mechanism 343 is used to drive one of the transmission gears 342 to rotate. The cutting mechanism 35 is located on one side of the support base.

[0039] The worker inserts the bar between the two drive wheels 341. At this time, the worker controls the power mechanism 343 through the control system. The power mechanism 343 drives one of the transmission gears 342 to rotate. This transmission gear 342 drives the other transmission gear 342, which meshes with it, to rotate in the opposite direction. This causes the two drive wheels 341 to rotate in opposite directions with the same linear velocity. The two drive wheels 341 drive the bar to move axially by friction, so that the bar passes through the drawing station and the cutting station in sequence, while also serving the functions of clamping and centering.

[0040] Two sets of guiding mechanisms 34 work together. One set, located at the entrance side of the drawing chamber 31, feeds the bar into the drawing chamber 31, while the other set, located at the exit side of the drawing chamber 31, guides the drawn bar out, ensuring that the bar remains on the central axis of the drawing channel throughout the drawing process.

[0041] The cutting mechanism 35 includes a cutting frame 351, a drive source 352, and a cutting piece 353. The cutting frame 351 is mounted on the forming chamber 1, and the drive source 352 is mounted on the cutting frame 351. The drive source 352 is a drive motor. The output end of the drive source 352 is eccentrically connected to the cutting piece 353. One end of the cutting piece 353 is slidably mounted on the cutting frame 351.

[0042] When the bar is drawn to the preset length and needs to be cut, the control system controls the drive source 352 to work. Since the output end of the drive source 352 is eccentrically connected to the cutting piece 353, the drive source 352 drives the cutting piece 353 to perform reciprocating linear motion when it rotates.

[0043] When the cutting component 353 moves towards the bar, its cutting edge contacts the bar and applies shearing force to cut the bar. For each revolution of the drive source 352, the cutting component 353 completes one reciprocating cutting action. After cutting, the cutting component 353 automatically retracts to facilitate the feeding of the next section of bar.

[0044] The cutting element 353 is equipped with a cutting blade, and a heating wire is installed inside the cutting blade. The heating wire is electrically connected to the control system. A temperature sensing element is installed on the cutting frame 351 near the cutting blade, and the temperature sensing element is electrically connected to the control system. The heating wire inside the cutting element 353 is used to preheat the cutting blade to a set temperature before cutting. The temperature sensing element near the cutting blade detects the temperature of the cutting blade in real time and feeds the temperature signal back to the control system. The control system compares the measured temperature with a preset cutting temperature threshold: when the temperature is lower than the set value, the current of the heating wire is increased or the energizing time is extended; when the temperature reaches or exceeds the set value, the heating current is reduced or cut off.

[0045] Before the cutting operation, the control system energizes the heating wire inside the cutting part 353, and the heating wire preheats the cutting blade, so that the cutting part 353 is heated to the set temperature.

[0046] During cutting, the cutting blade, heated to a set temperature, comes into contact with the bar stock. Utilizing the principle of heat-assisted shearing, the deformation resistance of the titanium alloy and the energy required for shearing are reduced, while simultaneously minimizing cutting burrs and surface defects. After cutting, the control system can either delay shutting off the heating wire or maintain the temperature as needed for the next cutting cycle.

[0047] Working Principle: The operator transports the bar stock into the lubrication chamber 21 via an external conveying device. After entering the lubrication chamber 21, the control system, based on preset bar stock diameter parameters, supplies a positive current to the excitation component 24 in the first lubrication mechanism 2. The lubrication chamber 21 and the excitation component 24 on the drive plate 22 generate mutually repulsive magnetic fields, pushing the drive plate 22 forward along the slide groove. The drive plate 22 drives multiple lubrication components 221 to move together. The guide plates 2213 at the ends of these lubrication components 221 slide along the guide grooves 2111 on the inner wall of the variable diameter bushing 211. Because the inner wall of the variable diameter bushing 211 is a conical surface, the guide grooves 2111 force the guide plates 2213 to contract radially inward as they move forward, causing the multiple flexible liquid-absorbing elements 2211 to gradually close together, ultimately maintaining slight contact with the surface of the bar stock. Simultaneously with the movement of the drive plate 22, the pressurizing mechanism 232 forces the lubricant in the oil storage chamber 231 into the flexible liquid-absorbing elements 2211, evenly coating the surface of the bar stock.

[0048] When the first lubrication mechanism 2 is working, the second lubrication mechanism 2 is in the reset state. Its drive plate 22 retracts under the reverse excitation, the lubricating component 221 detaches from the bar, and the pressurizing mechanism 232 replenishes lubricant from the oil storage chamber 231, preparing for the next operation. The two lubrication mechanisms 2 switch alternately according to the set time interval or drawing length to achieve uninterrupted lubrication and continuous lubrication of the bar.

[0049] After being lubricated, the bar enters the gap between the two drive wheels 341. The control system controls the power mechanism 343 to work according to the data from the external conveying device. The power mechanism 343 drives one of the transmission gears 342 to rotate, and the other transmission gear 342 drives the other transmission gear 342 to rotate in the opposite direction, so that the two drive wheels 341 rotate in opposite directions with the same linear speed. The two drive wheels 341 drive the bar to move forward, so that the bar moves to the drawing station and the cutting station one after another.

[0050] When the bar moves to the drawing station, it passes through multiple drawing members 32 in the drawing chamber 31 in sequence. The inner diameter of the multiple drawing members 32 decreases one by one, and the bar is drawn by reducing the diameter step by step. During the drawing process, the drive mechanism 33 drives the drawing chamber 31 to rotate, and the multiple drawing members 32 rotate with it. The rotating drawing members 32 change the original static sliding friction into dynamic friction with circumferential shear force, which significantly reduces the pulling force required for the bar to move forward.

[0051] When the bar moves to the cutting station, the guide mechanisms 34 on the inlet and outlet sides stop conveying, and the cutting mechanism 35 starts working. The control system first powers the heating wire inside the cutting piece 353 to preheat the cutting blade to the set temperature. The temperature measuring element provides real-time feedback of the temperature value. Then, the drive source 352 rotates. Since the output end is eccentrically connected to the cutting piece 353, the cutting piece 353 performs reciprocating linear motion. The cutting piece 353 moves towards the bar, and the heated cutting blade contacts the bar, cutting it using the principle of heat-assisted shearing. For each rotation of the drive source 352, the cutting piece 353 completes one cut and automatically retracts. After cutting, the guide mechanism 34 resumes conveying, sending the next section of bar to the cutting station and continuing to feed the finished bar forward.

[0052] Throughout the entire operation of the equipment, the control system coordinates the external conveying device, the guide mechanisms 34 on both sides, the two sets of lubrication mechanisms 2, the pulling mechanism 3 and the cutting mechanism 35 to operate automatically in sequence, realizing continuous operation of the entire process from feeding, lubrication, pulling to fixed-length cutting.

[0053] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A high-precision titanium alloy bar drawing and forming equipment, characterized in that: It includes a forming chamber (1), a lubrication mechanism (2), and a drawing mechanism (3); The lubrication mechanism (2) includes a lubrication chamber (21), a drive plate (22), and a filling mechanism (23). The lubrication chamber (21) and the drawing mechanism (3) are both installed on the forming chamber (1). A conveying channel is provided in the lubrication chamber (21), and a variable diameter bushing (211) is provided in the conveying channel. The drive plate (22) is slidably installed in the conveying channel, and multiple lubricating components (221) are slidably installed on the drive plate (22). One end of the lubricating component (221) slides in the variable diameter bushing (211). Excitation components (24) are installed on both the lubrication chamber (21) and the drive plate (22). The filling mechanism (23) includes an oil storage chamber (231) and a pressurizing mechanism (232). The oil storage chamber (231) is installed on the lubrication chamber (21), and the pressurizing mechanism (232) is installed on the drive plate (22). The inlet of the pressurizing mechanism (232) is connected to the oil storage chamber (231), and the outlet of the pressurizing mechanism (232) is connected to the lubricating component (221).

2. The high-precision titanium alloy bar drawing and forming equipment according to claim 1, characterized in that: The inner wall of the variable diameter bushing (211) is a conical surface, and multiple axially extending guide grooves (2111) are opened on the conical surface in the circumferential direction. The lubricating component (221) includes a flexible liquid-absorbing element (2211), a sliding component (2212), and a guide plate (2213). The flexible liquid-absorbing element (2211) and the guide plate (2213) are respectively installed at both ends of the sliding component (2212). The sliding component (2212) is slidably installed on the drive plate (22). The guide plate (2213) is slidably connected to the guide groove (2111). The sliding member (2212) is provided with a flow channel. One end of the flow channel is connected to the flexible liquid absorption element (2211), and the other end of the flow channel is connected to the outlet of the pressurizing mechanism (232).

3. The high-precision titanium alloy bar drawing and forming equipment according to claim 2, characterized in that: The pressurizing mechanism (232) includes a pump housing (2321) and a pump plug (2322), which are respectively mounted on the drive plate (22) and the sliding member (2212), and the sliding member (2212) penetrates the pump housing (2321). A sliding seal connection is formed between the pump plug (2322) and the pump housing (2321). An elastic element is connected between one end of the pump plug (2322) and the pump housing (2321). A sealed chamber is formed between the pump plug (2322), the sliding element (2212), and the pump housing (2321). The sealed chamber is connected to an inlet pipe, which is connected to an oil storage chamber (231). A connecting port is provided on the sliding member (2212) that communicates with the sealed chamber. A one-way valve is provided in both the inlet pipe and the connecting port.

4. The high-precision titanium alloy bar drawing and forming equipment according to claim 3, characterized in that: The flexible liquid-absorbing element (2211) includes a support layer (22111), a liquid storage element (22112), and an elastic layer (22113). The support layer (22111) is mounted on the sliding element (2212), and the liquid storage element (22112) and the elastic layer (22113) are respectively disposed on both sides of the support layer (22111). The inlet of the liquid storage component (22112) is connected to the flow channel inside the sliding component (2212), the outlet of the liquid storage component (22112) is connected to the elastic layer (22113), a one-way valve is installed in the inlet of the liquid storage component (22112), and a flow control valve is installed in the outlet of the liquid storage component (22112).

5. The high-precision titanium alloy bar drawing and forming equipment according to claim 1, characterized in that: The drawing mechanism (3) includes a drawing chamber (31), a drawing component (32), a driving mechanism (33), two sets of guiding mechanisms (34) and a cutting mechanism (35). The two ends of the drawing chamber (31) are mounted on the forming chamber (1) through bearing seats. A drawing channel is provided in the drawing chamber (31). Multiple drawing components (32) are provided. Multiple drawing components (32) are arranged in sequence in the drawing channel. The driving mechanism (33) is mounted on the forming chamber (1). The output end of the driving mechanism (33) is connected to the drawing chamber (31). The two sets of guiding mechanisms (34) are located on both sides of the drawing chamber (31), and the cutting mechanism (35) is located on one side of one set of guiding mechanisms (34).

6. The high-precision titanium alloy bar drawing and forming equipment according to claim 5, characterized in that: The drawing chamber (31) is provided with a heat dissipation duct, which is connected to the drawing channel. A cooling mechanism is installed on the outside of the drawing chamber (31), and the cooling mechanism is installed on the forming chamber (1).

7. The high-precision titanium alloy bar drawing and forming equipment according to claim 6, characterized in that: The guide mechanism (34) includes a support seat and two drive wheels (341). The support seat is installed on the molding chamber (1). The two drive wheels (341) are rotatably installed on the support seat in sequence. A transmission gear (342) is installed on one side of each of the two drive wheels (341). The two transmission gears (342) mesh with each other. One of the transmission gears (342) is connected to the output end of the power mechanism (343). The cutting mechanism (35) is located on one side of the support.

8. The high-precision titanium alloy bar drawing and forming equipment according to claim 7, characterized in that: The cutting mechanism (35) includes a cutting frame (351), a drive source (352), and a cutting piece (353). The cutting frame (351) is mounted on the forming chamber (1), the drive source (352) is mounted on the cutting frame (351), the output end of the drive source (352) is eccentrically connected to the cutting piece (353), and one end of the cutting piece (353) is slidably mounted on the cutting frame (351).

9. The high-precision titanium alloy bar drawing and forming equipment according to claim 8, characterized in that: The cutting component (353) is provided with a cutting blade, and a heating wire is provided inside the cutting blade. The heating wire is electrically connected to the control system. A temperature measuring element is provided on the cutting frame (351) near the cutting blade. The temperature measuring element is electrically connected to the control system.

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