Alloy cold header and process

Abstract

The application provides an alloy cold heading forming machine and process, and relates to the technical field of part forging, which is used for forging annular parts and comprises a clamping device for clamping the annular parts and a pushing device for pushing the annular parts. The pushing device comprises a mounting base, a forging head and a telescopic device between the mounting base and the forging head. The forging head comprises an annular forging base and a forging core sliding in the forging base. An accommodating opening is formed in the outer sidewall of the forging core, and at least two accommodating openings are arranged. A clamping rod and a columnar clamping end are arranged in the accommodating opening, and the clamping end is eccentrically fixed outside the clamping rod. After the annular part is forged, the clamping end is controlled to extend by a predetermined length and then deflect by a predetermined angle. The application effectively avoids the problems of die jamming, die drawing and damage of the annular workpiece after cold heading forming, and greatly improves the die drawing stability and forming precision of the annular workpiece after cold heading forming.

Description

Technical Field

[0001] This invention relates to the field of parts forging technology, and in particular to an alloy cold heading forming machine and process, specifically the ejection and rotation control of forged parts. Background Technology

[0002] Traditional cold heading forming equipment is equipped with an external single-sided clamping fixture and a simple ejector rod structure. After cold heading, the outer jaws directly clamp the outer wall of the workpiece to complete demolding and material discharge. The workpiece moves continuously between multiple stations to complete continuous cold heading forming.

[0003] Traditional cold heading equipment relies solely on the outer jaws to hold the outer wall of the workpiece, lacking a built-in inner wall clamping structure. When the outer structure subsequently performs rapid high-pressure impact gripping, the thin-walled annular part is prone to elliptical deformation due to the impact clamping force. Furthermore, existing push rods are insufficient for the stable positioning and pushing of the thin-walled annular part, which can lead to problems such as workpiece jamming, demolding damage, and other issues in some cases. Consequently, it is difficult to meet the demand for automated cold heading mass production of high-precision thin-walled annular alloys. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an alloy cold heading forming machine and process. This invention effectively avoids the problems of mold jamming and demolding damage of ring-shaped workpieces after cold heading, and significantly improves the demolding stability and forming accuracy of ring-shaped workpieces after cold heading.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] An alloy cold heading forming machine is used for forging ring-shaped parts. It includes a clamping device for holding the ring-shaped parts and an ejector device for pushing the ring-shaped parts. The ejector device includes a mounting base, a forging head, and a telescopic device located between the mounting base and the forging head. The forging head includes an annular forging base and a forging core that slides within the forging base. The outer sidewall of the forging core has a receiving opening, with at least two such openings. A clamping rod and a columnar clamping end are disposed within each receiving opening. The clamping end is eccentrically fixed to the outside of the clamping rod. After the ring-shaped parts are forged, the clamping end is controlled to extend a predetermined length and then deflect at a predetermined angle, causing the clamping end to move outside the receiving opening, and the protruding side of the clamping end deflects to the outside and abuts against the inner wall of the ring-shaped parts.

[0007] Preferably, the receiving opening includes an opening one adapted to the clamping end and an opening two adapted to the clamping rod. The opening one and opening two pass through the forging core and have a stepped cross-section. The main body of the clamping end and the clamping rod are respectively received by the opening one and opening two to ensure that the clamping end and the clamping rod can retract to the inside during the forging process of the ring part, thus ensuring the normal forging of the ring part.

[0008] Preferably, the inner wall of the forging base is slidably connected to an intermediate block located inside the forging core. The first side of the intermediate block is connected to the telescopic end of the telescopic device, and the second side is connected to the clamping rod. The intermediate block can be positioned in the middle to connect the telescopic end and the clamping rod, thereby providing a power source for the linear movement of the clamping rod and controlling the clamping rod to move linearly along the axis of the annular part. The clamping rod and the intermediate block are rotatably connected to ensure that the clamping rod can subsequently deflect normally at a predetermined angle.

[0009] Preferably, a deflection drive assembly is provided between the forging core and the clamping rod. The deflection drive assembly controls the clamping end to extend a predetermined length and then deflect at a predetermined angle. The predetermined angle can be selected as 180°. The clamping rod is controlled to drive the clamping end to deflect 180°, controlling the eccentric clamping end to deflect to the outside and abut against the inner wall of the annular part, so as to achieve the clamping and limiting of the annular part. After the annular part is gripped and positioned by the clamping device, the clamping rod and the clamping end retract and deflect 180° in the opposite direction to return to the initial state, canceling the limiting of the annular part, and at the same time offset from the inside of the annular part, so as to ensure that the clamping device can grip and move the annular part normally without interference.

[0010] Preferably, the deflection drive assembly includes a control protrusion located on the inner wall of the receiving opening, and the clamping rod surface has a control groove adapted to the control protrusion. The control groove has a straight section and a curved section. The control protrusion can move linearly along the inner wall of the control groove. When the control protrusion moves in the straight section of the control groove, the clamping rod will not deflect. When the control protrusion moves in the curved section of the control groove, it drives the clamping rod to deflect by a predetermined angle.

[0011] Preferably, the inner wall of the intermediate block is further provided with a pumping assembly. The pumping assembly is connected to the inner wall of the receiving opening through a pumping hose. The pumping assembly pumps oil into the receiving opening and sprays it out from the side near the clamping end. The sprayed oil can cool, lubricate, and remove impurities. It can carry away impurities on the surface of the clamping end, reduce the temperature generated by forging, and lubricate the internal structure to ensure the effect and quality of long-term forging.

[0012] Preferably, the pumping assembly is a pumping telescopic rod that is normally in the extended state and has a return elasticity. The pumping telescopic rod is connected to two pumping pipes with built-in one-way valves. The first pumping pipe is connected to an oil tank, and the second pumping pipe is connected to a pumping hose. During the inward movement of the intermediate block, the pumping telescopic rod is squeezed, and the pumping telescopic rod pumps out the sucked-in oil through the pumping pipe. During the outward movement of the intermediate block, the pumping telescopic rod returns to its original position under its own elasticity and sucks in the oil from the oil tank.

[0013] Preferably, the inner wall of the forging base is provided with limiting rings that restrict the maximum forward and reverse stroke of the forging core. The limiting rings on both sides limit the movement of the forging core to prevent it from detaching, while ensuring that the clamping rod and the columnar clamping end can retract to the inside of the forging core.

[0014] Preferably, a pressure sensor is provided inside the clamping end or clamping rod or at the connection point. The pressure sensor is electrically connected to the telescopic device. When the pressure sensor detects that the pressure exceeds the set threshold, it is determined that the clamping device is clamping the annular part. At this time, an electrical signal is sent to the telescopic device to control the telescopic device to drive the outer temporary limiting structure to contract and separate from the annular part.

[0015] An alloy cold heading forming process, using the aforementioned alloy cold heading forming machine, includes the following steps: S1, using a clamping device to clamp an unforged annular part from the previous station to one side of the forging head, and using a forging punch to press the unforged annular part into the forging head to complete the forging; after forging, the forging punch is pulled out and offset from the forging head; S2, controlling the telescopic device to push the clamping rod, clamping end, and forging core outward, first controlling the clamping end to extend a predetermined length and then deflect at a predetermined angle, driving the clamping... The end moves to the outside of the receiving opening and the clamping end protrusion is deflected to the outside and abuts against the inner wall of the annular part. Then, the forging core and the annular part clamped on the inside are pushed to move outward synchronously. S3, The annular part is clamped and limited from the outside by the clamping device. After the clamping device clamps and limits the clamping, the clamping force drops to the minimum value that meets the clamping stability. At the same time, the clamping rod, the clamping end and the forging core are controlled to move inward and be offset from the annular part. S4, The forged annular part is clamped to the next station by the clamping device.

[0016] The beneficial effects of this invention are as follows:

[0017] Compared with the prior art, the present invention, through the built-in eccentric self-clamping structure composed of the ejection device, the sliding forging core, multiple sets of receiving openings, the eccentric clamping end, and the clamping device, realizes the built-in inner wall adaptive clamping and positioning of the ring part after forging. It can achieve stable positioning of the workpiece without the need for external demolding fixtures, effectively avoiding the problems of the ring workpiece getting stuck in the mold and being pulled apart after cold heading. At the same time, it also avoids excessive deformation of the shape caused by excessive instantaneous squeezing and clamping force on the outside, greatly improving the demolding stability and forming accuracy of the ring workpiece after cold heading. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 For the present invention Figure 1 A side view structural diagram.

[0020] Figure 3 For the present invention Figure 2 A schematic diagram of the AA-direction cross-section structure.

[0021] Figure 4 For the present invention Figure 2 A magnified structural diagram at point B.

[0022] Figure 5 For the present invention Figure 3 A magnified structural diagram at point C.

[0023] Figure 6 This is a three-dimensional structural diagram of the device for launching the present invention.

[0024] In the diagram: 100, ring-shaped part; 200, clamping device; 210, rotary drive component; 220, clamping base; 230, clamping end; 231, clamping base; 232, telescopic component; 233, linkage rod; 234, clamping hand; 235, rotating joint; 300, ejection device; 310, mounting base; 320, telescopic device; 321, telescopic end; 330, forging head; 331, forging base; 332, limiting ring; 333, pump assembly; 334, intermediate block; 335, pump hose; 336, clamping rod; 337, clamping end; 338, control groove; 339, forging core; 3391, receiving opening. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0026] To address the problems mentioned in the background art, see Appendix Figure 1 -Appendix Figure 6 An alloy cold heading forming machine is used to forge annular parts 100. It includes a clamping device 200 for holding the annular parts 100 and an ejection device 300 for pushing the annular parts 100. The clamping device 200 transports the annular parts 100 to different workstations to achieve continuous forging manufacturing. The ejection device 300 ejects the annular parts 100 after a single forging and pushes them to one side of the clamping device 200 for clamping.

[0027] The ejection device 300 includes a mounting base 310, a forging head 330, and a telescopic device 320 located between the mounting base 310 and the forging head 330. The forging head 330 includes an annular forging base 331 and a forging core 339 that slides within the forging base 331. The annular part 100 is pushed into the forging base 331 of the forging head 330 by the forging punch and forged into a predetermined shape under compression. The forging core 339 supports and limits the end of the annular part 100 on the inner side.

[0028] To limit the annular part 100 from the inside, the outer sidewall of the forging core 339 has an accommodating opening 3391. At least two accommodating openings 3391 are provided. A clamping rod 336 and a columnar clamping end 337 are provided inside the accommodating opening 3391. The clamping end 337 is eccentrically fixed to the outside of the clamping rod 336. After the annular part 100 is forged, the clamping end 337 is controlled to extend a predetermined length and then deflect at a predetermined angle, driving the clamping end 337 to move outside the accommodating opening 3391 and the protruding side of the clamping end 337 deflects to the outside and abuts against the inner wall of the annular part 100. At this time, the inner wall of the annular part 100 is abutted and limited by at least two sets of clamping ends 337, ensuring the stability of the annular part 100 during the movement and conveying process. At the same time, it can also play a supporting and bearing role on the inside of the annular part 100, avoiding excessive squeezing and clamping force from the clamping device 200 on the outside, which would cause excessive deformation of the shape of the annular part 100.

[0029] The aforementioned clamping device 200 includes a clamping base 220, with a clamping end 230 at the lower end and a rotation drive 210 at the upper end. For the ring-shaped part 100 that needs to be rotated, after the ring-shaped part 100 is clamped and stabilized by the clamping end 230, the rotation drive 210 drives the clamping base 220 and the clamping end 230 to rotate, thereby controlling the outer side of the ring-shaped part 100 to face inward to complete the subsequent forging.

[0030] The aforementioned clamping end 230 includes a clamping base 231. The lower end of the clamping base 231 has two rotatable clamping hands 234. The two clamping hands 234 are connected by a linkage 233. The clamping hands 234 have a rotating joint 235 in the middle. The rotating joint 235 and the clamping base 231 are connected by a telescopic member 232. By controlling the telescopic member 232 to extend and retract, the clamping hands 234 on both sides can be opened and closed to grasp and release the annular part 100.

[0031] In summary, the present invention, through the built-in eccentric self-clamping structure composed of the ejection device 300, the sliding forging core 339, multiple sets of receiving openings 3391, the eccentric clamping end 337, and the clamping device 200, achieves built-in self-clamping positioning of the annular part 100 after forging. It can achieve stable positioning of the workpiece without the need for external demolding fixtures, effectively avoiding the problems of the annular workpiece getting stuck in the mold and being pulled during demolding after cold heading. At the same time, it also avoids the excessive squeezing and clamping force of the clamping device 200 on the outside, which would cause excessive deformation of the annular part 100. This greatly improves the demolding stability and forming accuracy of the annular workpiece after cold heading.

[0032] Specifically, the receiving opening 3391 includes an opening one adapted to the clamping end 337 and an opening two adapted to the clamping rod 336. The opening one and opening two pass through the forging core 339 and have a stepped cross-section. The main body of the clamping end 337 and the clamping rod 336 are respectively accommodated through the opening one and opening two to ensure that the clamping end 337 and the clamping rod 336 can retract to the inside during the forging process of the annular part 100, thus ensuring the normal forging of the annular part 100.

[0033] In summary, the present invention, through the aforementioned accommodating opening 3391, provides a stepped through-type split accommodating structure with opening one and opening two. Compared with the prior art, which uses a single through-hole to accommodate the clamping structure and exposes the clamping structure during forging, thus interfering with the forming process, the present invention achieves complete concealment of the clamping rod 336 and the clamping end 337 inside the forging core 339. This completely eliminates the interference, indentation, and impact defects of the clamping structure on the inner wall forming surface of the annular part 100 during the forging process, ensuring the integrity and smoothness of the inner wall during cold heading, and is suitable for high-precision annular alloy workpiece forming and processing.

[0034] Specifically, the inner wall of the forging base 331 is slidably connected to an intermediate block 334 located inside the forging core 339. The first side of the intermediate block 334 is connected to the telescopic end 321 of the telescopic device 320, and the second side is connected to the clamping rod 336. The intermediate block 334 can be located in the middle to connect the telescopic end 321 and the clamping rod 336, so as to provide a power source for the linear movement of the clamping rod 336 and control the clamping rod 336 to move linearly along the axis of the annular part 100. The clamping rod 336 and the intermediate block 334 are rotatably connected to ensure that the clamping rod 336 can deflect normally at a predetermined angle.

[0035] In summary, by adding an intermediate block 334 as an intermediate transmission connection structure, the present invention achieves power docking between the telescopic end 321 and the clamping rod 336, and the clamping rod 336 can rotate relative to the intermediate block 334. Compared with the existing technology where the linear movement and rotation of the clamping structure are mutually constrained and the power structure is separated, the present invention enables a single telescopic device 320 to simultaneously provide power for the linear extension of the clamping rod 336 without restricting its rotational deflection. The structure has high integration, stable power transmission, simplifies the equipment drive structure, and ensures smooth linkage between the clamping extension and deflection positioning actions.

[0036] Furthermore, a deflection drive assembly is provided between the forging core 339 and the clamping rod 336. The deflection drive assembly controls the clamping end 337 to extend a predetermined length and then deflect at a predetermined angle. The predetermined angle can be selected as 180°. The clamping rod 336 controls the clamping end 337 to deflect 180°, controlling the eccentric clamping end 337 to deflect to the outside and abut against the inner wall of the annular part 100, so as to achieve the clamping and limiting of the annular part 100. After the annular part 100 is gripped and positioned by the clamping device 200, the clamping rod 336 and the clamping end 337 retract and deflect 180° in the opposite direction to return to the initial state, canceling the limiting of the annular part 100. At the same time, it is offset from the inside of the annular part 100 to ensure that the clamping device 200 can grip and move the annular part 100 normally without interference.

[0037] In summary, the present invention controls the clamping end 337 to extend and then eccentrically reverse to clamp and then reverse to reset and stagger after gripping by the above-mentioned deflection drive component. This achieves the timing sequence of precise self-locking limit of the inner wall after forging and fully automatic reset and avoidance before material removal. It not only ensures that the workpiece does not deviate after demolding, but also completely eliminates the interference of the clamping structure on the movement of the clamping device 200 for material removal, and realizes the full-process automation of forming, demolding and material removal.

[0038] Specifically, the deflection drive assembly includes a control protrusion located on the inner wall of the receiving opening 3391. The clamping rod 336 has a control groove 338 adapted to the control protrusion on its surface. The control groove 338 has a straight section and a curved section. The control protrusion can move linearly along the inner wall of the control groove 338. When the control protrusion moves on the straight section of the control groove 338, the clamping rod 336 will not deflect. When the control protrusion moves on the curved section of the control groove 338, it drives the clamping rod 336 to deflect by a predetermined angle.

[0039] In summary, the present invention, through the aforementioned control protrusion and the control groove 338 with straight and curved segments, is a mechanical deflection drive structure. Compared with the existing technology that uses independent motors and cylinders for electronically controlled deflection, it does not require additional electronically controlled drive components. It automatically achieves the sequential actions of straight extension without deflection and automatic rotation and reversal upon reaching the destination by relying on mechanical stroke. It is suitable for harsh working conditions such as cold heading, high temperature, high oil content, and high load. It has a low failure rate, high synchronization accuracy, and low maintenance cost.

[0040] Furthermore, the inner wall of the intermediate block 334 is also provided with a pumping assembly 333. The pumping assembly 333 is connected to the inner wall of the receiving opening 3391 through a pumping hose 335. The pumping assembly 333 pumps oil into the receiving opening 3391 and sprays it out from the side near the clamping end 337. The sprayed oil can play the roles of cooling, lubrication and impurity removal. It can use the sprayed oil to carry away impurities on the surface of the clamping end 337, while reducing the temperature generated by forging and lubricating the internal related structures, ensuring the effect and quality of long-term forging.

[0041] In summary, the present invention, through the structure of the built-in pump fluid assembly 333 in the intermediate block 334 and the fixed-point oil spraying in conjunction with the pump fluid hose 335, compared with the existing technology of overall spraying and non-targeted lubrication and cooling, achieves fixed-point and precise oil supply to the friction area of ​​the clamping moving pair and the accommodating opening 3391. It can remove iron filings and impurities in the structural gaps in real time, reduce motion wear, dissipate the high temperature of cold forging, effectively prevent jamming, dry grinding and burning, and chip accumulation and jamming, and greatly improve the stability and service life of the equipment in continuous cold forging operation.

[0042] Specifically, the pumping assembly 333 is a pumping telescopic rod that is normally in the extended state and has a return elasticity. The pumping telescopic rod is connected to two pumping pipes with built-in one-way valves. The first pumping pipe is connected to the oil tank, and the second pumping pipe is connected to the pumping hose 335. When the intermediate block 334 moves inward, the pumping telescopic rod is squeezed. During the squeezing process, the pumping telescopic rod pumps out the sucked-in oil through the pumping pipe. When the intermediate block 334 moves outward, the pumping telescopic rod returns to its original position under its own elasticity and sucks in the oil from the oil tank.

[0043] In summary, this invention, through the self-priming and self-pumping structure of the above-mentioned elastic reset pumping telescopic rod combined with the double one-way valve pumping pipeline, compared with the existing technology of continuous oil supply by independent oil pump, reuses the reciprocating motion power of the intermediate block 334 to achieve mechanical pulse oil supply, without the need for additional oil supply power equipment. The motion and oil supply are completely synchronized, injecting oil on demand with no waste, saving energy and being highly efficient. It is also suitable for high-frequency continuous cold forging reciprocating working conditions, and the oil circuit start-stop response is accurate and highly reliable.

[0044] Furthermore, the inner wall of the forging base 331 is provided with a limiting ring 332 to limit the maximum forward and reverse stroke of the forging core 339. The limiting rings 332 on both sides limit the movement of the forging core 339 to the extremes on both sides, so as to prevent the forging core 339 from detaching, while ensuring that the clamping rod 336 and the columnar clamping end 337 can retract to the inside of the forging core 339.

[0045] In summary, compared with the existing technology that relies on electric stroke control for limiting the forging core 339 through the limiting structure of the double-sided limiting rings 332 on the inner wall of the forging base 331, the present invention achieves mechanical hard limiting of the forging core 339 to prevent it from falling out, thus eliminating structural collision damage caused by stroke loss control. At the same time, it precisely limits the retraction stroke, ensuring that the clamping rod 336 and the clamping end 337 are completely retracted and hidden, avoiding the structure from being exposed and interfering with the forming process during the forging process, and improving the safety of equipment operation and the stability of forming.

[0046] Furthermore, a pressure sensor is provided inside or at the connection of the clamping end 337 or clamping rod 336. The pressure sensor is electrically connected to the telescopic device 320. When the pressure sensor detects that the pressure exceeds the set threshold, it is determined that the clamping device 200 is clamping the annular part 100. At this time, an electrical signal is sent to the telescopic device 320 to control the telescopic device 320 to drive the outer temporary limiting structure to retract and separate from the annular part 100.

[0047] In summary, this invention, through the closed-loop control structure linking the built-in pressure sensor in the clamping structure with the telescopic device 320, compared with the existing technology that relies on fixed timing control for demolding and reset, achieves intelligent triggering of the reset action based on the actual clamping force state, avoiding workpiece clamping damage, pulling deformation, and material removal interference caused by timing deviations. It is suitable for demolding of alloy ring workpieces of different specifications and hardness, and the automation adaptability and molding yield are greatly improved.

[0048] Meanwhile, through the above design, a large clamping force can be applied in the initial stage when the clamping hand 234 clamps the outer side of the ring part 100 to ensure the stability and efficiency of the gripping limit of the ring part 100. The inner side of the ring part 100 is supported by the clamping end 337, so there is no need to worry about deformation caused by short-term impact. It is suitable for ring parts 100 with thin walls.

[0049] The invention will be further described below with reference to specific molding processes.

[0050] An alloy cold heading forming process, using the aforementioned alloy cold heading forming machine, includes the following steps:

[0051] S1. The unforged annular part 100 is clamped from the previous station to one side of the forging head 330 by the clamping device 200. The unforged annular part 100 is squeezed into the forging head 330 by the forging punch to complete the forging. After the forging is completed, the forging punch is pulled out and offset from the forging head 330. The forging punch can be a conical or stepped structure, which can extend into the inside of the annular part 100 to squeeze the annular part 100 from the inside to expand the inner diameter of the annular part 100, or forge the annular part 100 into a predetermined shape to meet the processing requirements. The above is the prior art and will not be described in detail here.

[0052] S2. Control the telescopic device 320 to push the clamping rod 336, clamping end 337 and forging core 339 outward. First, control the clamping end 337 to extend a predetermined length and then deflect at a predetermined angle, driving the clamping end 337 to move outside the receiving opening 3391 and the protruding side of the clamping end 337 to deflect to the outside and abut against the inner wall of the annular part 100. Then push the forging core 339 and the annular part 100 clamped on the inside to move outward synchronously. At this time, the clamped and stable annular part 100 is discharged outward to ensure that it is stably clamped and limited by the clamping device 200.

[0053] S3. The clamping device 200 clamps and limits the annular part 100 from the outside. After the clamping device 200 clamps and limits the part, the clamping force drops to the minimum value that meets the clamping stability. At the same time, the clamping rod 336, the clamping end 337 and the forging core 339 are controlled to move inward and be offset from the annular part 100. At this time, the clamping rod 336, the clamping end 337 and other structures are reset to their initial state to meet the requirements of subsequent forging. The forging core 339 can be pulled to the predetermined position inside by the clamping end 337 and the clamping rod 336 at the same time, and reaches the predetermined area inside under the limit of the limiting ring 332.

[0054] S4. The forged annular part 100 is clamped to the next station by the clamping device 200. The above actions are repeated to complete the continuous forging process of multiple annular parts 100.

[0055] In summary, this invention, through the closed-loop cold heading forming process of feeding and positioning, forging and forming, inner wall adaptive clamping and demolding, outer clamping and avoidance, and automatic material discharge, compared with the existing segmented manual demolding and step-by-step transfer processing method, realizes fully automated continuous operation of cold heading forming of ring alloy workpieces. The process is closely connected without interruption, completely solving the problems of workpiece jamming, deformation, demolding damage, and transfer deviation after cold heading, and greatly improving the forming accuracy, production cycle and batch production consistency of ring alloy workpieces.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An alloy cold heading forming machine, comprising a clamping device (200) for clamping an annular part (100) and an ejection device (300) for pushing the annular part (100), characterized in that: The ejection device (300) includes a mounting base (310), a forging head (330), and a telescopic device (320) located between the mounting base (310) and the forging head (330). The forging head (330) includes an annular forging base (331) and a forging core (339) that slides within the forging base (331). The outer sidewall of the forging core (339) has a receiving opening (3391). There are at least two receiving openings (3391). A clamping rod (336) and a columnar clamping end (337) are provided inside the receiving opening (3391). The clamping end (337) is eccentrically fixed to the outside of the clamping rod (336). After the annular part (100) is forged, the clamping end (337) is extended to a predetermined length and then deflected at a predetermined angle, causing the clamping end (337) to move to the outside of the receiving opening (3391) and the protruding side of the clamping end (337) to deflect to the outside and abut against the inner wall of the annular part (100).

2. The alloy cold heading forming machine according to claim 1, characterized in that, The receiving opening (3391) includes an opening one that is adapted to the clamping end (337) and an opening two that is adapted to the clamping rod (336). The opening one and the opening two pass through the forging core (339) and have a stepped cross-section. The main body of the clamping end (337) and the clamping rod (336) are respectively received through the opening one and the opening two.

3. The alloy cold heading forming machine according to claim 1, characterized in that, The inner wall of the forging base (331) is slidably connected to an intermediate block (334) located inside the forging core (339). The first side of the intermediate block (334) is connected to the telescopic end (321) of the telescopic device (320), and the second side is connected to the clamping rod (336).

4. The alloy cold heading forming machine according to claim 3, characterized in that, A deflection drive assembly is provided between the forging core (339) and the clamping rod (336). The deflection drive assembly controls the clamping end (337) to extend a predetermined length and then deflect at a predetermined angle.

5. The alloy cold heading forming machine according to claim 4, characterized in that, The deflection drive assembly includes a control protrusion located on the inner wall of the receiving opening (3391), and the surface of the clamping rod (336) has a control groove (338) adapted to the control protrusion, the control groove having a straight section and a curved section.

6. The alloy cold heading forming machine according to claim 3, characterized in that, The inner wall of the intermediate block (334) is also provided with a pumping assembly (333), which is connected to the inner wall of the receiving opening (3391) through a pumping hose (335).

7. The alloy cold heading forming machine according to claim 6, characterized in that, The pump fluid assembly (333) is a pump fluid telescopic rod that is normally in the extended state and has a reset elasticity. The pump fluid telescopic rod is connected to two pump fluid pipes with built-in one-way valves. The first pump fluid pipe is connected to an oil tank, and the second pump fluid pipe is connected to a pump fluid hose (335).

8. The alloy cold heading forming machine according to any one of claims 1-7, characterized in that, The inner wall of the forging base (331) is provided with a limiting ring (332) to limit the maximum forward and reverse stroke of the forging core (339).

9. The alloy cold heading forming machine according to any one of claims 1-7, characterized in that, A pressure sensor is provided inside or at the connection of the clamping end (337) or clamping rod (336), and the pressure sensor is electrically connected to the telescopic device (320).

10. An alloy cold heading forming process, characterized in that, Using the alloy cold heading forming machine according to any one of claims 1-9, the process includes the following steps: S1. The ring-shaped part (100) that has not been forged is clamped from the previous station to the side of the forging head (330) by the clamping device (200). The ring-shaped part (100) that has not been forged is squeezed into the forging head (330) by the forging punch to complete the forging. After the forging is completed, the forging punch is pulled out and offset from the forging head (330). S2. Control the telescopic device (320) to push the clamping rod (336), clamping end (337) and forging core (339) to move outward. First, control the clamping end (337) to extend a predetermined length and then deflect a predetermined angle, driving the clamping end (337) to move outside the receiving opening (3391) and the protruding side of the clamping end (337) to deflect to the outside and abut against the inner wall of the annular part (100). Then push the forging core (339) and the annular part (100) clamped on the inside to move outward synchronously. S3. The ring part (100) is clamped and limited from the outside by the clamping device (200). After the clamping device (200) clamps and limits the ring part (100), the clamping force drops to the minimum value that meets the clamping stability. At the same time, the clamping rod (336), the clamping end (337) and the forging core (339) are controlled to move inward and be offset from the ring part (100). S4. The forged ring-shaped part (100) is clamped to the next station by the clamping device (200).

Images