Multi-directional die forging treatment process capable of improving precision of forgings

Abstract

The invention relates to the technical field of forging dies, in particular to a multidirectional die forging treatment process for improving the precision of forgings, which comprises the following steps: S1, a concave block ascends from a discharge port of a lower die, a workpiece to be machined is placed on the concave block, and an upper die descends and extrudes the upper part of the forgings; s2, the two side dies continuously conduct forging and pressing on the side portion of the workpiece to be machined, and in the forging and pressing process, chippings falling into the lower die are collected to the position near a discharging opening and discharged through a discharging groove; s3, after the upper die descends by a rated distance, the concave block descends and retracts into the position changing shell, the position changing shell changes positions, and chippings in the lower die fall into a second reversing groove through a discharging opening and are discharged; and S4, when the upper die is about to make contact with the side dies, the two side dies are in a closed state, the position changing shell changes the position, the concave block moves to the position under the discharging opening and ascends, the concave block and the end face of the lower die form a complete die cavity, and the upper die continues to descend to complete forging and pressing. The machining precision of the forge piece is improved, and the defective rate is reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of forging dies, in particular to a processing technology for improving the precision of multi-directional die forgings. BACKGROUND

[0002] Due to the shape of the forgings, the required processing technology and processing equipment are also different. Traditional forgings have simple shapes, but when processing special-shaped forgings, such as forgings with a ring-shaped groove in the middle and hemispherical structures at both ends, a multi-directional die needs to be used for processing.

[0003] Chinese Patent No. CN210848163U discloses a multi-directional die forging die, which comprises an upper die, the inner wall of the upper die is lapped with a forging, the lower part of the forging is lapped with a lower die, the upper die and the lower die are both concave dies, the left and right ends of the forging are lapped with a left horizontal die and a right horizontal die respectively, the left horizontal die and the right horizontal die are both convex dies; the center points of the upper die and the lower die are on the same vertical line; the center points of the left horizontal die and the right horizontal die are on the same horizontal line; the opposite side angles of the left horizontal die and the right horizontal die both have an arc.

[0004] Although the above-mentioned scheme can realize the one-piece forming of special-shaped forgings, during forging, the shape of the special-shaped forgings affects the forging die, which needs to first forge the middle section of the original piece to be forged, thereby forming a ring-shaped groove of the forging, and then forge the two hemispherical structures. During forging, a large amount of metal oxides will fall outside the forging. The existing multi-directional die for processing this special-shaped forging does not have an automatic chip removal function, resulting in a large amount of metal oxides accumulating in the lower die. After forging is completed, although the metal oxides in the lower die can be pressed together with the lower part of the forging, the strength of the metal oxides is much lower than the actual requirement, resulting in a high rate of defective products. SUMMARY

[0005] In view of the above problems, a processing technology for improving the precision of multi-directional die forgings is provided, which realizes real-time removal of chips in the whole forging process through the hierarchical chip removal design of the concave block side wall discharge slot and the double transposition slot of the transposition shell, combined with the open chip removal structure of the discharge port. During the pre-forming stage of the columnar structure in the middle section of the forging, the chips fall into the first transposition slot through the discharge slot. During the forging process of the hemispherical structure of the forging, the chips falling into the lower die fall into the second transposition slot through the open discharge port. After the forging is formed, most of the chips have been cleaned.

[0006] To solve the problems of the prior art, the present application provides a processing technology for improving the precision of multi-directional die forgings, which adopts a processing device for improving the precision of multi-directional die forgings, the device comprising a lower die, an upper die and a side die;

[0007] A discharge port, a transposition shell and a concave block are arranged at the lower die;

[0008] The discharging port is vertically and penetratively arranged in the bottom of the lower die;

[0009] The transposition shell is arranged below the discharging port and moves along the horizontal direction, and the transposition shell is provided with the first transposition groove and the second transposition groove, which are arranged along the length direction of the transposition shell;

[0010] The concave block is vertically and movably arranged in the first transposition groove and can extend into the discharging port, and the side wall of the concave block is provided with the discharging groove, and the upper end of the discharging groove is below the upper end surface of the concave block;

[0011] The specific processing steps are as follows:

[0012] S1, the concave block is lifted from the discharging port of the lower die, the workpiece to be processed is placed on the concave block, and the upper die is lowered to extrude the upper part of the workpiece to be processed;

[0013] S2, the two side dies continuously stamp the side part of the workpiece to be processed in the process that the upper die extrudes the upper part of the workpiece to be processed, and the scraps falling into the lower die are collected near the discharging port and discharged through the discharging groove;

[0014] S3, when the upper die is lowered by a rated distance, the concave block is lowered and retracted into the transposition shell, the transposition shell is transposed, and the scraps in the lower die fall into the second transposition groove through the discharging port and are discharged;

[0015] S4, when the upper die is about to contact the side die, the two side dies are in a closed state, the transposition shell is transposed again, so that the concave block moves to the position directly below the discharging port and is lifted, the concave block and the end surface of the lower die form a complete die cavity, and the upper die continues to be lowered and completes the stamping.

[0016] The application also relates to a processing device for improving the precision of a multi-directional die forging, which is applied to a processing technology for improving the precision of a multi-directional die forging, and comprises a lower die, an upper die and side dies.

[0017] The discharging port, the transposition shell and the concave block are arranged at the lower die;

[0018] The discharging port is vertically and penetratively arranged in the bottom of the lower die;

[0019] The transposition shell is arranged below the discharging port and moves along the horizontal direction, and the transposition shell is provided with the first transposition groove and the second transposition groove, which are arranged along the length direction of the transposition shell;

[0020] The concave block is vertically and movably arranged in the first transposition groove and can extend into the discharging port, and the side wall of the concave block is provided with the discharging groove, and the upper end of the discharging groove is below the upper end surface of the concave block.

[0021] Preferably, openings are formed in the side walls of the transposition shell on the side of the first transposition slot and the second transposition slot, and a discharge bin for guiding the discharge of the scraps is arranged below the openings.

[0022] Preferably, the bottom of the first transposition slot and the second transposition slot is inclined downward toward the openings.

[0023] Preferably, a linear driver and a jacking rod are arranged below the concave block.

[0024] The linear driver is vertically arranged below the concave block.

[0025] The jacking rod is vertically and fixedly arranged at the bottom of the concave block and penetrates the bottom of the first transposition slot, and the linear driver drives the concave block to ascend and descend through the jacking rod.

[0026] Preferably, a receiving plate is fixedly arranged at the end of the linear driver, a clamping unit is arranged on the receiving plate, a clamping groove is formed in the lower part of the jacking rod, and the clamping unit is clamped and matched with the clamping groove.

[0027] Preferably, a through groove is arranged in the lower part of the clamping groove, the horizontal area of the through groove is smaller than that of the clamping groove, the clamping unit further comprises a clamping piece, the upper part of the clamping piece has the same horizontal shape as the through groove, and the clamping piece can be clamped and matched with the clamping groove after passing through the through groove.

[0028] Preferably, a driving unit is arranged on the receiving plate, the driving unit comprises a gear ring, the gear ring is sleeved on the periphery of the clamping piece, and the clamping piece rotates synchronously with the gear ring.

[0029] Preferably, an extension rod is vertically and fixedly arranged at the bottom of the first transposition slot, and an extension sleeve is fixedly arranged at the lower part of the concave block, the extension rod extends into the extension sleeve and is in sliding cooperation with the extension sleeve.

[0030] Preferably, two side molds are arranged, and an annular seat is arranged at the bottom of the two side molds, and the annular seat can rotate around the lower mold.

[0031] The beneficial effects of the present application compared with the prior art are:

[0032] 1. The present application realizes the real-time removal of the scraps in the whole forging process through the hierarchical removal of the scraps by the concave block sidewall discharge groove and the double transposition slots of the transposition shell, and the open discharge structure of the discharge port. In the preforming stage of the columnar structure in the middle of the forging, the scraps fall into the first transposition slot through the discharge groove. In the forging process of the hemispherical structure of the forging, the scraps falling into the lower mold fall into the second transposition slot through the open discharge port. After the forging is formed, most of the scraps have been removed, and the problem of the accumulation of the scraps in the lower mold cavity in the traditional device is solved, and the discharge efficiency is improved.

[0033] 2. By the mechanical linkage of "concave block lifting and transposition shell translation", the side mold is closed and constrained, which ensures the forming precision of the mold cavity while removing the debris. The concave block and the lower mold end face form a complete mold cavity at the final forging, and the lower part of the forged piece is tightly attached to the mold surface, avoiding the adhesion of metal oxides and forged pieces, improving the local strength compliance rate of the forged piece, and thus improving the machining precision of the forged piece and reducing the scrap rate caused by "insufficient local strength".

[0034] 3. By the combination design of the inclined bottom surface of the transposition groove, the side wall opening and the lower discharge bin, and the stable driving structure of the linear driver and the clamping unit, it is ensured that the debris can be directed into the discharge bin for unified cleaning, and the offset and jamming problems of the concave block lifting are avoided, and the rotation design of the annular seat accelerates the middle section forming of the forged piece. The whole device improves the precision while simplifying the subsequent cleaning process, and the equipment running stability and production efficiency are effectively optimized. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 is a perspective view of a processing device for improving the precision of a multi-directional die forging piece of the present application.

[0036] Figure 2 is a cutaway perspective view of the processing device for improving the precision of a multi-directional die forging piece of the present application, which contains a forged piece and the forged piece has not been forged.

[0037] Figure 3 is a perspective view of the processing device for improving the precision of a multi-directional die forging piece of the present application. Figure 2 is a partial enlarged view of position A in the processing device for improving the precision of a multi-directional die forging piece of the present application.

[0038] Figure 4 is a cutaway perspective view of the processing device for improving the precision of a multi-directional die forging piece of the present application, which contains a forged piece and the forged piece has been forged.

[0039] Figure 5 is a partial enlarged view of position B in the processing device for improving the precision of a multi-directional die forging piece of the present application. Figure 4

[0040] Figure 6 is a perspective view of the processing device for improving the precision of a multi-directional die forging piece of the present application after removing the side mold.

[0041] Figure 7 is a cutaway perspective view of the transposition shell of the processing device for improving the precision of a multi-directional die forging piece of the present application.

[0042] Figure 8 is a cutaway perspective view of the processing device for improving the precision of a multi-directional die forging piece of the present application, which contains a forged piece and the forged piece has not been forged.​

[0043] The labels in the figure are: 1, lower die; 11, discharge port; 12, transposition shell; 121, first transposition groove; 122, second transposition groove; 123, opening; 124, discharge bin; 13, concave block; 131, discharge groove; 14, linear driver; 15, jacking rod; 151, clamping groove; 152, through groove; 16, clamping unit; 161, clamping piece; 162, driving unit; 1621, gear ring; 1622, rotary driver; 1623, gear; 17, receiving plate; 18, extension rod; 19, extension sleeve; 2, upper die; 3, side die; 31, annular seat; 4, forged piece. DETAILED DESCRIPTION

[0044] In order to further understand the features, technical means and specific purposes and functions achieved by the present application, the present application will be described in further detail below in combination with the drawings and specific embodiments.

[0045] Reference Figures 1-8 A processing process for improving the precision of a multi-directional die forging piece, which adopts a processing device for improving the precision of a multi-directional die forging piece, the device comprising a lower die 1, an upper die 2 and a side die 3;

[0046] The lower die 1 is provided with a discharge port 11, a transposition shell 12 and a concave block 13;

[0047] The discharge port 11 is vertically arranged through the bottom of the lower die 1;

[0048] The transposition shell 12 is arranged below the discharge port 11 in a horizontal direction, and the transposition shell 12 is provided with a first transposition groove 121 and a second transposition groove 122, which are arranged along the length direction of the transposition shell 12;

[0049] The concave block 13 is vertically arranged in the first transposition groove 121 and can extend into the discharge port 11, and the concave block 13 is provided with a discharge groove 131 on the side wall, and the upper end of the discharge groove 131 is below the upper end surface of the concave block 13;

[0050] The specific processing steps are as follows:

[0051] S1, the concave block 13 is lifted from the discharge port 11 of the lower die 1, the workpiece to be processed is placed on the concave block 13, and the upper die 2 is lowered to extrude the upper part of the workpiece to be processed;

[0052] S2, the two side dies 3 continuously forge the side part of the workpiece to be processed in the process of extruding the upper part of the workpiece to be processed by the upper die 2, and the debris falling into the lower die 1 is collected near the discharge port 11 and discharged through the discharge groove 131;

[0053] S3, when the upper die 2 falls by a rated distance, the concave block 13 falls and is retracted into the transposition shell 12, the transposition shell 12 is transposed, and the scrap in the lower die 1 falls into the second transposition groove 122 through the discharge port 11 and is discharged;

[0054] S4, when the upper die 2 and the side die 3 are about to contact, the two side dies 3 are in a closed state, the transposition shell 12 is transposed again, so that the concave block 13 moves to be directly below the discharge port 11 and rises, the concave block 13 and the end face of the lower die 1 form a complete die cavity, and the upper die 2 continues to fall and completes the forging.

[0055] Referring to Figures 1-5 The application also relates to a processing device for improving the precision of a multi-directional die forging, which is applied to a processing technology for improving the precision of a multi-directional die forging, and comprises a lower die 1, an upper die 2 and side dies 3.

[0056] The lower die 1 is provided with a discharge port 11, a transposition shell 12 and a concave block 13.

[0057] The discharge port 11 vertically penetrates the bottom of the lower die 1.

[0058] The transposition shell 12 is movably arranged below the discharge port 11 in a horizontal direction, and the transposition shell 12 is provided with a first transposition groove 121 and a second transposition groove 122, which are arranged along the length direction of the transposition shell 12.

[0059] The concave block 13 is movably arranged in the first transposition groove 121 and can extend into the discharge port 11, and a discharge groove 131 is formed in the side wall of the concave block 13 and has an upper end below the upper end face of the concave block 13.

[0060] Although the multi-directional die forging technology can realize the integral molding of the special-shaped forging 4, without subsequent splicing processing, and significantly improves the overall structural stability and production efficiency of the forging 4, in actual forging operation, due to the complex structure of the special-shaped forging 4, that is, the middle section is columnar and the two ends are hemispherical, the die needs to follow a specific step-by-step processing logic: first, the middle section of the forged original piece is directionally forged by precise pressure parameters, and in the closing process of the upper die 2 and the lower die 1, the two side dies 3 are continuously forged, so that the middle section metal is plastically deformed, and gradually forms a columnar structure meeting the size requirements; after the columnar structure is formed, the upper die 2 continues to fall, and the forging of the hemispherical structure at both ends is completed.

[0061] In this series of high temperature and high pressure forging process, the metal on the surface of the profiled forging 4 will continuously generate a large amount of metal oxide in the form of debris under the action of air contact and die friction. Due to the limitation of structure design, the matched multi-directional forging die does not set a special automatic chip removal channel and power chip removal device, so these metal oxides cannot be removed from the forging area in time and can only accumulate in the cavity of the lower die 1.

[0062] When the forging process is completed and the die is opened, the accumulated metal oxides will be separated from the lower die 1 together with the forging 4, and part of the oxides will be pressed and adhered to the metal surface of the lower part of the forging 4 under the action of forging pressure. Because the crystal structure of the metal oxide is loose, its strength is only 1 / 3 to 1 / 2 of the strength of the body metal of the forging 4, which cannot meet the requirements of the profiled forging 4 on the core performance of bearing strength and impact resistance in subsequent assembly and use, and finally leads to the forging 4 becoming a defective product due to "local insufficient strength".

[0063] In order to avoid the above situation, the existing multi-directional die forging 4 processing device is redesigned, so that the processing device of the present application can remove the metal chips falling into the lower die 1 in real time during the forging process, avoid the adhesion of metal chips to the forging 4, and further ensure the forming precision and quality of the forging 4. The working principle of the present application is as follows:

[0064] After the device is started, the concave block 13 vertically rises along the first displacement slot 121, the upper end surface of the concave block 13 extends from the discharge port 11 of the lower die 1 and forms a temporary supporting surface, and the workpiece is precisely placed on the top end of the concave block 13. At this time, the upper die 2 starts to vertically descend, and the pre-pressure is applied to the upper part of the workpiece, and the two side dies 3 are synchronously moved to the center to preliminarily forge the side part of the workpiece. This process is mainly aimed at the middle section area of the profiled forging 4, and lays a foundation for the formation of the middle section columnar structure of the forging 4.

[0065] In the initial stage of pre-forging metal oxide debris, because the upper end surface of the concave block 13 is higher than the discharge port 11, and the upper end of the discharge groove 131 opened in the side wall of the concave block 13 is located below the upper end surface of the concave block 13, the debris in the cavity of the lower die 1 can be discharged through the discharge groove 131. The discharged debris enters the first displacement slot 121 of the displacement shell 12, avoiding the accumulation of debris at the bottom of the die cavity of the lower die 1.

[0066] When the upper die 2 falls to the preset rated distance, the middle columnar structure of the forging 4 is initially formed under the forging pressure of the two side dies 3, the concave block 13 vertically falls along the first transposition groove 121 and is completely retracted into the transposition shell 12, and at this time, the discharge port 11 of the lower die 1 is in a completely open state. Subsequently, the transposition shell 12 is horizontally translated to move the originally aligned first transposition groove 121 away from the discharge port 11 and simultaneously make the idle second transposition groove 122 accurately butt joint the discharge port 11. The residual debris in the cavity of the lower die 1 falls into the second transposition groove 122 through the open discharge port 11 under the action of gravity and is discharged outside through the second transposition groove 122. At this time, the upper die 2 continues to fall, the hemispherical structures at both ends of the forging 4 are in the preforming stage, and the forging 4 in the lower die 1 will still have debris falling during the forming process, but the debris will not be left in the lower die 1 because the discharge port 11 is completely open. This step realizes the concentrated debris removal by using the forging pressure gap and completely removes a large amount of debris generated in the middle forming stage of the forging 4.

[0067] When the transposition shell 12 completes the translation, the upper die 2 and the side die 3 are about to contact to enter the hemispherical structure forging pressure link, and the two side dies 3 are in a closed state to ensure that the middle columnar structure of the forging 4 does not deform and forms a closed constraint on the side of the workpiece. Subsequently, the transposition shell 12 is horizontally translated again to reset the first transposition groove 121 with the concave block 13 to be aligned with the discharge port 11, and the concave block 13 vertically rises immediately, and the upper end surface of the concave block 13 and the upper end surface of the lower die 1 together form a complete hemispherical cavity.

[0068] Subsequently, the upper die 2 continues to fall and cooperates with the closed side die 3, the concave block 13 and the lower die 1 to finally forge and shape the hemispherical structures at both ends of the workpiece. Since there is no debris accumulation in the lower die 1, the lower part of the forging 4 can be closely attached to the surface of the die to avoid oxide compression and adhesion, thereby finally ensuring the forming precision of the forging 4.

[0069] Referring to Figure 4 and Figure 5 : The transposition shell 12 side wall on one side of the first transposition groove 121 and the second transposition groove 122 is provided with an opening 123, and a debris discharge bin 124 is arranged below the opening 123.

[0070] The debris discharged through the first transposition groove 121 or the second transposition groove 122 can fall into the debris discharge bin 124 and be discharged from the debris discharge bin 124, which is convenient for subsequent unified cleaning.

[0071] Referring to Figures 1-8 : The bottom of the first transposition groove 121 and the second transposition groove 122 is inclined downward toward the opening 123.

[0072] The bottom of the first transposition groove 121 and the second transposition groove 122 is provided in an inclined structure, so that the debris falling into the first transposition groove 121 and the second transposition groove 122 can be discharged from the opening 123, and the accumulation phenomenon in the first transposition groove 121 and the second transposition groove 122 is avoided.

[0073] With reference to Figure 6 and Figure 8 : The linear drive 14 and the jacking rod 15 are arranged below the concave block 13.

[0074] The linear drive 14 is vertically arranged below the concave block 13.

[0075] The jacking rod 15 is vertically fixedly arranged at the bottom of the concave block 13 and penetrates the bottom of the first transposition groove 121, and the linear drive 14 drives the concave block 13 to ascend and descend through the jacking rod 15.

[0076] The linear drive 14 is preferably a hydraulic cylinder, and the linear drive 14 drives the concave block 13 to ascend and descend through the jacking rod 15, so that the concave block 13 can be extended from the transposition shell 12 or retracted into the transposition shell 12.

[0077] With reference to Figure 7 and Figure 8 : The receiving plate 17 is fixedly arranged at the end of the linear drive 14, the clamping unit 16 is arranged on the receiving plate 17, the clamping groove 151 is arranged at the lower part of the jacking rod 15, and the clamping unit 16 is clamped and matched with the clamping groove 151.

[0078] When the linear drive 14 drives the concave block 13 to descend through the jacking rod 15, because the upper part of the concave block 13 has a receiving effect on the forged piece 4, when the upper die 2 descends, the bottom of the forged piece 4 is pressed against the concave block 13, and if the clamping unit 16 is not arranged, the concave block 13 is easily embedded in the bottom of the forged piece 4 and cannot be pulled out. After the clamping unit 16 is arranged, the jacking rod 15 always has a traction force when driving the concave block 13 to move and ascend and descend.

[0079] With reference to Figure 8 : The through groove 152 is arranged at the lower part of the clamping groove 151, the horizontal area of the through groove 152 is smaller than that of the clamping groove 151, the clamping unit 16 further includes the clamping piece 161, the upper part of the clamping piece 161 has the same horizontal shape as the through groove 152, and the clamping piece 161 can be clamped and matched with the clamping groove 151 after passing through the through groove 152.

[0080] The clamping piece 161 rotates along the axis of the jacking rod 15, and the clamping unit 16 is not in contact with the bottom of the jacking rod 15 before the concave block 13 is jacked up. When jacking is needed, the linear actuator 14 drives the bearing plate 17 to drive the clamping unit 16 to rise, so that the clamping piece 161 in the clamping unit 16 penetrates into the clamping groove 151 from the through groove 152, and then the clamping piece 161 rotates, and the rotated clamping piece 161 is clamped with the clamping groove 151. When unlocking is needed, the clamping piece 161 reversely rotates, and when the clamping piece 161 coincides with the through groove 152 in the vertical direction, the clamping piece 161 stops rotating and drops out of the through groove 152.

[0081] With reference to Figure 5 And Figure 6 The driving unit 162 is arranged on the bearing plate 17, and the driving unit 162 includes a gear ring 1621 which is sleeved on the periphery of the clamping piece 161, and the clamping piece 161 rotates synchronously with the gear ring 1621.

[0082] Since the clamping piece 161 is connected with the gear ring 1621, the clamping piece 161 can rotate synchronously with the gear ring 1621, and the clamping piece 161 is indirectly driven to rotate by the gear ring 1621, instead of directly arranging a rotary actuator 1622 at the bottom of the clamping piece 161, so that the extrusion damage of the rotary actuator 1622 by the reaction force generated when the concave block 13 is extruded by the forging 4 is avoided. The driving unit 162 further includes the rotary actuator 1622 and a gear 1623, the rotary actuator 1622 is vertically arranged on the bearing plate 17, the gear 1623 is fixedly arranged on the output end of the rotary actuator 1622, and the gear 1623 is engaged with the gear ring 1621. The rotary actuator 1622 indirectly drives the clamping piece 161 to rotate through the gear 1623 and the gear ring 1621, so that the output end of the rotary actuator 1622 is not directly subjected to pressure when the concave block 13 is under pressure, and damage of the rotary actuator 1622 is avoided.

[0083] With reference to Figure 8 The extension rod 18 is vertically and fixedly arranged at the bottom of the first transposition groove 121, and the extension sleeve 19 is fixedly arranged at the lower part of the concave block 13, and the extension rod 18 extends into the extension sleeve 19 and is in sliding fit with the extension sleeve 19.

[0084] When the clamping piece 161 is inserted into the clamping groove 151 from the through groove 152, the clamping piece 161 needs to rotate to complete clamping with the clamping groove 151, at this time, there is a certain friction force between the clamping piece 161 and the jacking rod 15. If the recessed block 13 is not limited by the extension sleeve 19 and the extension rod 18, the jacking rod 15 is easy to slightly deviate due to the rotation of the clamping piece 161. After the extension sleeve 19 and the extension rod 18 are arranged, it is ensured that the clamping piece 161 can be smoothly inserted from the through groove 152 each time, the situation that the clamping piece 161 cannot pass through the through groove 152 is avoided, and the smoothness of the clamping piece 161 and the clamping groove 151 during clamping and unlocking is ensured.

[0085] With reference to Figure 1 The side die 3 is provided with two, and the bottom of the two side dies 3 is provided with an annular seat 31, and the annular seat 31 can rotate around the lower die 1.

[0086] When the side die 3 is used to forge the workpiece 4, the annular seat 31 continuously rotates around the lower die 1, so that the workpiece 4 can be subjected to horizontal pressure in different directions when being forged by the two side dies 3, thereby ensuring that the middle columnar structure of the workpiece 4 can be formed faster.

[0087] The above embodiments only express one or several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the protection scope of the present application. It should be pointed out that, for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A process for improving the precision of forgings by processing multi-directional forgings, comprising a processing device for improving the precision of forgings by processing multi-directional forgings, the device comprising a lower die (1), an upper die (2) and a side die (3); A discharge port (11), a replacement shell (12), and a concave block (13) are provided at the lower mold (1); The discharge port (11) is vertically opened through the bottom of the lower mold (1); The transposition shell (12) is moved horizontally and positioned below the discharge port (11). The transposition shell (12) is provided with a first transposition groove (121) and a second transposition groove (122). The first transposition groove (121) and the second transposition groove (122) are arranged along the length of the transposition shell (12). The concave block (13) is vertically movable in the first repositioning groove (121) and can extend into the discharge port (11). A discharge groove (131) is provided on the side wall of the concave block (13), and the upper end of the discharge groove (131) is located below the upper end face of the concave block (13). Its features are, The specific processing steps are as follows: S1. The concave block (13) rises from the discharge port (11) of the lower die (1) and places the work to be processed on the concave block (13). The upper die (2) descends and squeezes the upper part of the work to be processed. S2. During the process of the upper die (2) pressing the upper part of the workpiece, the two side dies (3) continuously forge the side part of the workpiece. During the forging process, the debris falling into the lower die (1) is collected near the discharge port (11) and discharged through the discharge groove (131). S3. When the upper mold (2) descends by the rated distance, the concave block (13) descends and retracts into the shifting shell (12). The shifting shell (12) shifts, and the debris in the lower mold (1) falls into the second shifting groove (122) through the discharge port (11) and is discharged. S4. When the upper mold (2) and the side mold (3) are about to contact, the two side molds (3) are in a closed state, the replacement shell (12) is replaced again, so that the concave block (13) moves to the bottom of the discharge port (11) and rises. The concave block (13) and the end face of the lower mold (1) form a complete mold cavity. The upper mold (2) continues to descend and completes the forging.

2. A processing apparatus for improving the precision of multi-directional forgings, the apparatus being applied to the processing process for improving the precision of multi-directional forgings as described in claim 1, the processing apparatus comprising a lower die (1), an upper die (2) and a side die (3); Its features are, A discharge port (11), a replacement shell (12), and a concave block (13) are provided at the lower mold (1); The discharge port (11) is vertically opened through the bottom of the lower mold (1); The transposition shell (12) is moved horizontally and positioned below the discharge port (11). The transposition shell (12) is provided with a first transposition groove (121) and a second transposition groove (122). The first transposition groove (121) and the second transposition groove (122) are arranged along the length of the transposition shell (12). The concave block (13) is vertically movable in the first repositioning groove (121) and can extend into the discharge port (11). A discharge groove (131) is provided on the side wall of the concave block (13), and the upper end of the discharge groove (131) is located below the upper surface of the concave block (13).

3. The processing device for improving the precision of multi-directional forgings according to claim 2, characterized in that, An opening (123) is provided on the side wall of the transposition shell (12) on one side of the first transposition groove (121) and the second transposition groove (122), and a discharge bin (124) for guiding the discharge of debris is provided below the opening (123).

4. The processing device for improving the precision of multi-directional forgings according to claim 3, characterized in that, The bottoms of both the first transposition groove (121) and the second transposition groove (122) slope downward toward the opening (123).

5. The processing device for improving the precision of multi-directional forgings according to claim 2, characterized in that, A linear actuator (14) and a lifting rod (15) are provided below the concave block (13); The linear actuator (14) is vertically positioned below the concave block (13); The lifting rod (15) is vertically fixed at the bottom of the concave block (13) and passes through the bottom of the first shifting groove (121). The linear driver (14) drives the concave block (13) to rise and fall through the lifting rod (15).

6. The processing apparatus for improving the precision of multi-directional forgings according to claim 5, characterized in that, A receiving plate (17) is fixedly provided at the end of the linear actuator (14), and a snap-fit ​​unit (16) is provided on the receiving plate (17). A snap-fit ​​groove (151) is provided at the lower part of the lifting rod (15), and the snap-fit ​​unit (16) snaps into the snap-fit ​​groove (151).

7. The processing apparatus for improving the precision of multi-directional forgings according to claim 6, characterized in that, A through groove (152) is provided at the lower part of the snap-fit ​​groove (151). The horizontal area of ​​the through groove (152) is smaller than the horizontal area of ​​the snap-fit ​​groove (151). The snap-fit ​​unit (16) also includes a snap-fit ​​member (161). The horizontal shape of the upper part of the snap-fit ​​member (161) is the same as that of the through groove (152). After the snap-fit ​​member (161) passes through the through groove (152), it can snap-fit ​​with the snap-fit ​​groove (151).

8. The processing apparatus for improving the precision of multi-directional forgings according to claim 7, characterized in that, A drive unit (162) is provided on the receiving plate (17). The drive unit (162) includes a toothed ring (1621). The toothed ring (1621) is sleeved on the periphery of the snap fastener (161). The snap fastener (161) rotates synchronously with the toothed ring (1621).

9. The processing device for improving the precision of multi-directional forgings according to claim 2, characterized in that, An extension rod (18) is vertically fixed at the bottom of the first repositioning groove (121), and an extension sleeve (19) is fixed at the lower part of the concave block (13). The extension rod (18) extends into the extension sleeve (19) and slides with the extension sleeve (19).

10. A processing device for multi-directional forgings to improve forging precision according to claim 2, characterized in that, There are two side molds (3), and annular seats (31) are provided at the bottom of the two side molds (3). The annular seats (31) can rotate around the lower mold (1).

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