A precipitation hardening steel forging processing method and shaping device

Abstract

The present invention discloses a precipitation hardening steel forging processing method and a shaping device, and the steps are as follows: ① placing a blank heated to a set temperature on a support table of a forging machine; ② using the forging head of the forging machine to preliminarily forge the blank; ③ placing the blank in a columnar hole at the top of the shaping device; ④ using the forging head of the forging machine to forge the blank again, so that the top surface of the blank is flush with the top surface of the shaping device, and the outer edge surface of the blank is in contact with the inner wall of the columnar hole; ⑤ placing a set of punching rods in the middle of the top surface of the blank, and then pressing the forging head downward to punch holes; ⑥ then placing a set of base pads under the shaping device, continue to punch holes, and punch the punching rods and the excess material punched out at the bottom of the punching rods and the punching rods into the base to complete the punching and forging of the blank shape. The present invention improves forging efficiency and quality and reduces costs.

Description

Technical Field

[0001] The invention relates to the field of metal part forging production, and in particular to a precipitation hardening steel forging processing method and a shaping device. Background Art

[0002] When precipitation hardened steel is heated and forged, especially when a ring structure needs to be forged, the blank is generally forged into a columnar structure first, and then a hole is punched in the middle. After the hole is punched, the internal hole is not coaxial with the blank, so it needs to be stood up and the product is rotated while forging the outside to make it look like a ring structure. Finally, it is placed on a lathe for turning to make it a completely qualified ring-shaped part. This method is inefficient, of poor quality, and relatively expensive. Summary of the invention

[0003] The purpose of the present invention is to provide a precipitation hardening steel forging processing method and shaping device, by using the structure, the processing efficiency and quality of precipitation hardening steel are improved and the cost is reduced.

[0004] To achieve the above object, the technical solution adopted by the present invention is: a precipitation hardening steel forging processing method, the steps of which are:

[0005] ① Take the billet heated to the set temperature out of the heating furnace and move it to the support table of the forging machine;

[0006] ② First, use the forging head of the forging machine to forge the blank, and forge the blank into a cylindrical shape with a lower height;

[0007] ③ Use the forging reclaimer to remove the blank from the forging machine, then place a set of shaping devices on the support table of the forging machine, and then place the blank in the cylindrical hole on the top of the shaping device;

[0008] ④ Use the forging head of the forging machine to forge the blank. During this process, move the position of the shaping device on the support table while forging, so that the top surface of the blank will be flush with the top surface of the shaping device, and the outer edge of the blank will contact the inner wall of the cylindrical hole;

[0009] ⑤ Place a set of punching rods on the middle of the top surface of the billet, and use the positioning mechanism of the shaping device to align the punching rods so that they are placed in the center of the top surface of the billet. Then press the forging head down to squeeze the punching rods into the middle of the billet to punch holes in the middle of the billet.

[0010] ⑥ Then place a set of bases under the shaping device, continue punching, and punch the punching rod, the excess material at the bottom of the punching rod, and the punching rod into the base to complete the punching; after the punching is completed, turn the shaping device 180 degrees, and press the forging head downward on the edge of the shaping device to make the shaping device vibrate, so that the blank can be separated from the shaping device, completing the forging of the blank shape.

[0011] To achieve the above-mentioned purpose, the present invention adopts a precipitation hardening steel forging processing shaping device, including a base, a shaping ring, a positioning mechanism and a punching rod which are separately arranged, a first grabbing rod is arranged on the outer wall of the shaping ring, a second grabbing rod is arranged on the outer edge surface of the base, a coaxially arranged cylindrical hole is arranged on the top surface of the shaping ring, a coaxially arranged clearance hole is arranged in the middle of the bottom surface of the cylindrical hole, the diameter of the clearance hole is smaller than the diameter of the cylindrical hole, and the diameter of the punching rod is smaller than or equal to the diameter of the clearance hole;

[0012] A through hole is provided in the center of the base, the diameter of the through hole is equal to the clearance hole, the outer diameter of the base is smaller than the outer diameter of the shaping ring, the length of the punching rod is greater than the thickness of the base, the bottom of the punching rod is placed in the through hole, and in the use state, the shaping ring is placed on the top surface of the base;

[0013] The positioning mechanism includes a third grab bar, an outer arc plate, an inner arc plate and multiple groups of connecting plates, the multiple groups of connecting plates connect the outer arc plate and the inner arc plate, the outer arc plate and the inner arc plate are coaxially arranged, the end of the third grab bar is connected to the outer middle part of the outer arc plate; the two ends of the bottom of the outer arc plate are provided with arc extension plates extending downward; in use, the inner wall of the arc extension plate contacts the outer edge surface of the shaping ring, the bottom surface of the outer arc plate abuts against the top surface of the shaping ring, the inner arc plate is arranged directly above the cylindrical hole, and the inner side surface of the inner arc plate is arranged close to the inner wall of the clearance hole or the inner side surface of the inner arc plate is arranged flush with the inner wall of the clearance hole.

[0014] In the above technical solution, when the inner wall of the arc-shaped extension plate contacts the outer edge surface of the shaping ring, the outer arc-shaped plate and the inner arc-shaped plate are coaxially arranged with the shaping ring.

[0015] In the above technical solution, a first annular groove is provided on the bottom surface of the shaping ring, and a second annular groove is provided on the inner side of the bottom of the clearance hole. The first annular groove and the second annular groove are coaxially arranged with the shaping ring, and a first annular convex strip is formed between the first annular groove and the second annular groove.

[0016] In the above technical solution, a third annular groove is provided in the middle of the top surface of the base, and the third annular groove is arranged on the outside of the through hole. The third annular groove is coaxially arranged with the through hole, and a second annular convex strip is formed between the third annular groove and the through hole, and a fourth annular convex strip is formed between the third annular groove and the outer edge surface of the base.

[0017] In the above technical solution, when the shaping ring is placed on the base, the first annular ridge is clamped in the third annular groove, the fourth annular ridge is clamped in the first annular groove, and the second annular ridge is clamped in the second annular groove.

[0018] In the above technical solution, the clearance hole includes a lower hole and a horn hole, the top of the lower hole is connected to the bottom surface of the horn hole, the horn hole is a structure that is larger at the top and smaller at the bottom, the top of the horn hole is connected to the columnar hole, and the second annular groove is arranged on the bottom outer edge surface of the lower hole.

[0019] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art:

[0020] 1. In the present invention, a shaping ring is used to shape the blank into a qualified columnar structure, and then a positioning mechanism is used to position the punching rod, so that when the punching rod punches a hole in the blank, the hole position and the blank are coaxially arranged, thereby achieving fast and qualified forging of the ring part, and can reduce subsequent turning processes or time, effectively reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the first embodiment of the present invention;

[0022] Figure 2 yes Figure 1 Schematic diagram of the decomposition structure in;

[0023] Figure 3 This is a top view of the sizing ring (with the positioning mechanism placed above the sizing ring).

[0024] Among them: 1. base; 2. shaping ring; 3. punching rod; 4. first grabbing rod; 5. second grabbing rod; 6. columnar hole; 7. clearance hole; 8. through hole; 9. third grabbing rod; 10. outer arc plate; 11. inner arc plate; 12. connecting plate; 13. arc extension plate; 14. first annular groove; 15. second annular groove; 16. first annular convex strip; 17. third annular groove; 18. second annular convex strip; 19. fourth annular convex strip; 20. lower hole; 21. horn hole. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0026] Example 1: See Figures 1 to 3 As shown, a precipitation hardening steel forging processing method, the steps are:

[0027] ① Take the billet heated to the set temperature out of the heating furnace and move it to the support table of the forging machine;

[0028] ② First, use the forging head of the forging machine to forge the blank, and forge the blank into a cylindrical shape with a lower height;

[0029] ③ Use the forging reclaimer to remove the blank from the forging machine, then place a set of shaping devices on the support table of the forging machine, and then place the blank in the cylindrical hole on the top of the shaping device;

[0030] ④ Use the forging head of the forging machine to forge the blank. During this process, move the position of the shaping device on the support table while forging, so that the top surface of the blank will be flush with the top surface of the shaping device, and the outer edge of the blank will contact the inner wall of the cylindrical hole;

[0031] ⑤ Place a set of punching rods on the middle of the top surface of the billet, and use the positioning mechanism of the shaping device to align the punching rods so that they are placed in the center of the top surface of the billet. Then press the forging head down to squeeze the punching rods into the middle of the billet to punch holes in the middle of the billet.

[0032] ⑥ Then place a set of bases under the shaping device, continue punching, and punch the punching rod, the excess material at the bottom of the punching rod, and the punching rod into the base to complete the punching; after the punching is completed, turn the shaping device 180 degrees, and press the forging head downward on the edge of the shaping device to make the shaping device vibrate, so that the blank can be separated from the shaping device, completing the forging of the blank shape.

[0033] In this embodiment, during processing, the setting of the shaping device is utilized so that during forging, a qualified columnar part can be forged. The setting of the punching rod can be utilized so that holes can be punched on the columnar part. In order to ensure that the punching position is coaxial with the columnar part, the positioning mechanism is used to position the punching rod so that the punching rod is coaxial with the columnar part. This ensures that after punching, the product is a qualified ring-shaped part, which can reduce the forging process and eliminate the need for subsequent turning processing, or reduce turning processing, thereby effectively reducing costs and improving efficiency.

[0034] See also Figures 1 to 3As shown, in order to achieve the above-mentioned purpose, the present invention adopts a precipitation hardening steel forging processing shaping device, including a base 1, a shaping ring 2, a positioning mechanism and a punching rod 3 which are separately arranged, a first grabbing rod 4 is arranged on the outer wall of the shaping ring, a second grabbing rod 5 is arranged on the outer edge surface of the base, a coaxially arranged cylindrical hole 6 is arranged on the top surface of the shaping ring, a coaxially arranged clearance hole 7 is arranged in the middle of the bottom surface of the cylindrical hole, the diameter of the clearance hole is smaller than the diameter of the cylindrical hole, and the diameter of the punching rod is smaller than or equal to the diameter of the clearance hole;

[0035] A through hole 8 is provided in the center of the base, the diameter of the through hole is equal to the clearance hole, the outer diameter of the base is smaller than the outer diameter of the shaping ring, the length of the punching rod is greater than the thickness of the base, the bottom of the punching rod is placed in the through hole, and in the use state, the shaping ring is placed on the top surface of the base;

[0036] The positioning mechanism includes a third grab bar 9, an outer arc plate 10, an inner arc plate 11 and multiple groups of connecting plates 12, the multiple groups of connecting plates connect the outer arc plate and the inner arc plate, the outer arc plate and the inner arc plate are coaxially arranged, the end of the third grab bar is connected to the outer middle part of the outer arc plate; the two ends of the bottom of the outer arc plate are provided with arc extension plates 13 extending downward; in use, the inner wall of the arc extension plate is in contact with the outer edge surface of the shaping ring, the bottom surface of the outer arc plate is against the top surface of the shaping ring, the inner arc plate is arranged directly above the cylindrical hole, and the inner side surface of the inner arc plate is close to the inner wall of the clearance hole or the inner side surface of the inner arc plate is flush with the inner wall of the clearance hole.

[0037] Wherein, when the inner wall of the arc-shaped extension plate contacts the outer edge surface of the shaping ring, the outer arc-shaped plate and the inner arc-shaped plate are coaxially arranged with the shaping ring.

[0038] In this embodiment, in actual use, the blank of precipitation hardened steel is in columnar or block shape. After being heated to the set temperature, it is placed on the support table of the forging machine, forged to be smaller first, and then the first grabbing rod is grasped to place the sizing ring on the support table, and the blank is placed in the columnar hole of the sizing ring, and then the forging machine is used for forging, so that the blank is completely forged in the sizing ring, and the top surface of the blank is flush with the top surface of the sizing ring, so that the blank is a cylindrical structure, and then the punching rod is placed on the top of the blank. In order to ensure that the punching rod can be in the center of the blank and face the clearance hole, the operator grabs the third grab bar, so that the outer arc plate is placed on the top surface of the shaping ring, the inner arc plate is placed on the top surface of the blank, and the inner side surface of the arc extension plate is against the outer wall of the shaping ring, and then pushes the outer side surface of the punching rod and the inner side surface of the inner arc plate, so that the punching rod is above the center of the blank, and then the positioning mechanism is removed, and then the forging head of the forging machine is lowered. The forging head then continues to hammer down the punching rod to completely penetrate the blank, so that the punching rod and the material punched out from the inner hole fall on the base. In this way, the forming ring is removed and turned 180 degrees so that the blank faces downward, and the forging head knocks on the edge of the forming ring a few times to make the blank separate from the forming ring, remove the forming ring, and remove the base and the punching rod at the same time. The material dropped by the punching is also a small cylindrical structure, which can be used to process other materials. The blank in the forming ring is a circular ring structure with stable quality and good coaxiality. At the same time, it can reduce subsequent processing procedures, reduce costs, shorten forging time, and increase efficiency.

[0039] See also Figure 1 , 2 As shown, a first annular groove 14 is provided on the bottom surface of the shaping ring, and a second annular groove 15 is provided on the inner side of the bottom of the clearance hole. The first annular groove and the second annular groove are coaxially arranged with the shaping ring, and a first annular ridge 16 is formed between the first annular groove and the second annular groove.

[0040] A third annular groove 17 is provided in the middle of the top surface of the base, and the third annular groove is arranged on the outside of the through hole. The third annular groove and the through hole are coaxially arranged, and a second annular convex strip 18 is formed between the third annular groove and the through hole, and a fourth annular convex strip 19 is formed between the third annular groove and the outer edge surface of the base.

[0041] When the shaping ring is placed on the base, the first annular convex strip is clamped in the third annular groove, the fourth annular convex strip is clamped in the first annular groove, and the second annular convex strip is clamped in the second annular groove.

[0042] In this embodiment, by setting corresponding annular grooves and annular convex strips, when the shaping ring is placed on the base, the positions of the two are relatively fixed, and the through hole will be directly opposite to the clearance hole. In this way, when the punching rod is hammered down, the punching rod and the material underneath it can fall directly into the through hole, thereby ensuring the efficiency and stability of the punching.

[0043] See also Figure 1 , 2 As shown, the clearance hole includes a lower hole 20 and a horn hole 21. The length of the horn hole is 1 / 10 to 1 / 5 of the length of the lower hole. The top of the lower hole is connected with the bottom of the horn hole. The horn hole is a structure that is larger at the top and smaller at the bottom. The top of the horn hole is connected with the columnar hole. The second annular groove is arranged on the bottom outer edge surface of the lower hole.

[0044] By setting the trumpet hole, a certain punching deformation can be given to the hole position of the blank during punching, thereby ensuring the stability of the punching, preventing partial cracks from occurring during punching and affecting the quality of the product, and effectively ensuring the stability and quality of the punching.

Claims

1. A method for processing precipitation hardened steel forgings, comprising the steps of: ① Take the billet heated to the set temperature out of the heating furnace and move it to the support table of the forging machine; ② First, use the forging head of the forging machine to forge the blank, and forge the blank into a cylindrical shape with a lower height; ③ Use the forging reclaimer to remove the blank from the forging machine, then place a set of shaping devices on the support table of the forging machine, and then place the blank in the cylindrical hole on the top of the shaping device; ④ Use the forging head of the forging machine to forge the blank. During this process, move the position of the shaping device on the support table while forging, so that the top surface of the blank will be flush with the top surface of the shaping device, and the outer edge of the blank will contact the inner wall of the cylindrical hole; ⑤ Place a set of punching rods on the middle of the top surface of the billet, and use the positioning mechanism of the shaping device to align the punching rods so that they are placed in the center of the top surface of the billet. Then press the forging head down to squeeze the punching rods into the middle of the billet to punch holes in the middle of the billet. ⑥ Then place a set of bases under the shaping device, continue punching, punch the punching rod and the excess material punched out at the bottom of the punching rod and the punching rod into the base to complete the punching; after the punching is completed, turn the shaping device 180 degrees, and the forging head presses down on the edge of the shaping device again to make the shaping device vibrate, so that the blank can be separated from the shaping device, completing the forging of the blank shape; The shaping device comprises a base, a shaping ring, a positioning mechanism and a punching rod which are separately arranged. A first grabbing rod is arranged on the outer wall of the shaping ring, a second grabbing rod is arranged on the outer edge surface of the base, a coaxially arranged cylindrical hole is arranged on the top surface of the shaping ring, a coaxially arranged clearance hole is arranged in the middle of the bottom surface of the cylindrical hole, the diameter of the clearance hole is smaller than the diameter of the cylindrical hole, and the diameter of the punching rod is smaller than or equal to the diameter of the clearance hole; A through hole is provided in the center of the base, the diameter of the through hole is equal to the clearance hole, the outer diameter of the base is smaller than the outer diameter of the shaping ring, the length of the punching rod is greater than the thickness of the base, the bottom of the punching rod is placed in the through hole, and in the use state, the shaping ring is placed on the top surface of the base; The positioning mechanism includes a third grab bar, an outer arc plate, an inner arc plate and multiple groups of connecting plates, the multiple groups of connecting plates connect the outer arc plate and the inner arc plate, the outer arc plate and the inner arc plate are coaxially arranged, the end of the third grab bar is connected to the outer middle part of the outer arc plate; the two ends of the bottom of the outer arc plate are provided with arc extension plates extending downward; in use, the inner wall of the arc extension plate contacts the outer edge surface of the shaping ring, the bottom surface of the outer arc plate abuts against the top surface of the shaping ring, the inner arc plate is arranged directly above the cylindrical hole, and the inner side surface of the inner arc plate is arranged close to the inner wall of the clearance hole or the inner side surface of the inner arc plate is arranged flush with the inner wall of the clearance hole.

2. The precipitation hardening steel forging processing method according to claim 1, characterized in that: When the inner wall of the arc-shaped extension plate contacts the outer edge surface of the shaping ring, the outer arc-shaped plate and the inner arc-shaped plate are coaxially arranged with the shaping ring.

3. The precipitation hardening steel forging processing method according to claim 1, characterized in that: A first annular groove is provided on the bottom surface of the shaping ring, and a second annular groove is provided on the inner side of the bottom of the clearance hole. The first annular groove and the second annular groove are coaxially arranged with the shaping ring, and a first annular convex strip is formed between the first annular groove and the second annular groove.

4. The precipitation hardening steel forging processing method according to claim 3, characterized in that: A third annular groove is provided in the middle of the top surface of the base, and the third annular groove is arranged on the outside of the through hole. The third annular groove and the through hole are coaxially arranged, and a second annular convex strip is formed between the third annular groove and the through hole, and a fourth annular convex strip is formed between the third annular groove and the outer edge surface of the base.

5. The precipitation hardening steel forging processing method according to claim 4, characterized in that: When the shaping ring is placed on the base, the first annular convex strip is clamped in the third annular groove, the fourth annular convex strip is clamped in the first annular groove, and the second annular convex strip is clamped in the second annular groove.

6. The precipitation hardening steel forging processing method according to claim 3, characterized in that: The clearance hole includes a lower hole and a horn hole, the top of the lower hole is connected to the bottom surface of the horn hole, the horn hole is a structure with a larger top and a smaller bottom, the top of the horn hole is connected to the columnar hole, and the second annular groove is arranged on the bottom outer edge surface of the lower hole.

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